Android 应用程序正在崩溃选项卡和 Google 地图
Android App is crashing Tabs and Google Maps
我正在使用 ActionBar 选项卡，有三个选项卡，第三个选项卡有 Google 地图。
当我在第 1 和第 3 之间切换时，它崩溃，在第 1 和第 2 之间它也崩溃，但在第 2 和第 3 之间切换永远不会崩溃。我不知道为什么会这样。
代码MainActivity
package com.example.prototype;
import android.app.ActionBar;
import android.app.ActionBar.Tab;
import android.app.ActionBar.TabListener;
import android.app.Activity;
import android.support.v4.app.FragmentManager;
import android.app.FragmentTransaction;
import android.os.Bundle;
import android.support.v4.app.ActionBarDrawerToggle;
import android.support.v4.app.FragmentActivity;
import android.support.v4.view.ViewPager;
import android.support.v4.view.ViewPager.OnPageChangeListener;
import android.support.v4.widget.DrawerLayout;
import android.support.v4.widget.DrawerLayout.DrawerListener;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.Toast;
public class MainActivity extends FragmentActivity implements ActionBar.TabListener {
TabsPagerAdapter tabpager;
ViewPager pager;
DrawerLayout drawerLayout;
ActionBar action_bar;
ListView navigation_list;
@SuppressWarnings("deprecation")
ActionBarDrawerToggle drawerToggle;
String items[];
String tabs_list[]={"Best Offers","Categories","Near By Places"};
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.drawer_layout);
initComponents();
action_bar=getActionBar();
setNavigationList();
setTabs();
}
@SuppressWarnings("deprecation")
private void setTabs() {
action_bar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);
for (String tab_name : tabs_list) {
action_bar.addTab(action_bar.newTab().setText(tab_name)
.setTabListener(this));
}
pager.setAdapter(tabpager);
pager.setOnPageChangeListener(new OnPageChangeListener() {
@Override
public void onPageSelected(int arg0) {
// TODO Auto-generated method stub
action_bar.setSelectedNavigationItem(arg0);;
}
@Override
public void onPageScrolled(int arg0, float arg1, int arg2) {
// TODO Auto-generated method stub
}
@Override
public void onPageScrollStateChanged(int arg0) {
// TODO Auto-generated method stub
}
});
}
@SuppressWarnings("deprecation")
private void setNavigationList() {
int open=R.string.navigation_open;
int close=R.string.navigation_close;
navigation_list.setAdapter(new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, items));
drawerToggle=new ActionBarDrawerToggle(this,drawerLayout, R.drawable.ic_menu_white_18dp,open,close){
public void onDrawerClosed(View view) {
super.onDrawerClosed(view);
action_bar.show();
}
public void onDrawerOpened(View drawerView) {
super.onDrawerOpened(drawerView);
action_bar.hide();
}
};
drawerLayout.setDrawerListener(drawerToggle);
action_bar.setDisplayHomeAsUpEnabled(true);
action_bar.setHomeButtonEnabled(true);
}
@Override
protected void onPostCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onPostCreate(savedInstanceState);
drawerToggle.syncState();
}
private void initComponents() {
// TODO Auto-generated method stub
drawerLayout=(DrawerLayout) findViewById(R.id.drawer_layout);
action_bar=getActionBar();
navigation_list=(ListView) findViewById(R.id.left_drawer);
items=getResources().getStringArray(R.array.navigation_drawer);
pager=(ViewPager) findViewById(R.id.pager);
FragmentManager m=getSupportFragmentManager();
tabpager=new TabsPagerAdapter(m);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
if (id == R.id.search_menu) {
Toast.makeText(getApplicationContext(), "Searched Clicked ", Toast.LENGTH_LONG).show();
return true;
}
if (id == R.id.share_menu) {
Toast.makeText(getApplicationContext(), "Share Clicked ", Toast.LENGTH_LONG).show();
return true;
}
if (id == R.id.navigation_menu) {
Toast.makeText(getApplicationContext(), "Navigation Clicked ", Toast.LENGTH_LONG).show();
return true;
}
return super.onOptionsItemSelected(item);
}
@Override
public void onTabSelected(Tab tab, FragmentTransaction ft) {
// TODO Auto-generated method stub
pager.setCurrentItem(tab.getPosition());
}
@Override
public void onTabUnselected(Tab tab, FragmentTransaction ft) {
// TODO Auto-generated method stub
}
@Override
public void onTabReselected(Tab tab, FragmentTransaction ft) {
// TODO Auto-generated method stub
}
}
选项卡 1 java 代码：
public class BestOfferFragment extends Fragment{
View rootView;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
rootView = inflater.inflate(R.layout.bestoffer, container, false);
}
}
选项卡 2 java 代码：
public class CategoriesrFragment extends Fragment{
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.categories, container, false);
return rootView;
}
}
选项卡 3 java 代码：
package com.example.prototype.tabs;
import java.util.Timer;
import com.example.prototype.MainActivity;
import com.example.prototype.R;
import com.google.android.gms.maps.CameraUpdate;
import com.google.android.gms.maps.CameraUpdateFactory;
import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.GoogleMapOptions;
import com.google.android.gms.maps.MapFragment;
import com.google.android.gms.maps.OnMapReadyCallback;
import com.google.android.gms.maps.SupportMapFragment;
import com.google.android.gms.maps.model.Circle;
import com.google.android.gms.maps.model.CircleOptions;
import com.google.android.gms.maps.model.LatLng;
import com.google.android.gms.maps.model.Marker;
import com.google.android.gms.maps.model.MarkerOptions;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.app.Activity;
import android.content.Context;
import android.graphics.Color;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Toast;
public class NearByPlacesFragment extends Fragment implements OnMapReadyCallback, LocationListener {
static int i=0;
GoogleMap gmap;
Marker mp;
LatLng ll;
Location l;
Context ctx;
double lat,lon;
boolean isGpsEnabled,isNetworkAvailable,isLocationSet;
LocationManager lmgr;
long minTime = 1000;
long minDistance = 1;
Location loc;
SupportMapFragment mapFragment;
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
ctx=getActivity();
super.onCreateView(inflater, container, savedInstanceState);
if(mapFragment!=null){ Toast.makeText(getActivity(), "fragment exist`", 1000).show();}
View rootView = inflater.inflate(R.layout.nearbyplaces, container, false);
loc=getLocation();
if(gmap==null)
setMap();
Toast.makeText(getActivity(), "created`", 1000).show();
return rootView;
}
private void setMap() {
// TODO Auto-generated method stub
mapFragment = (SupportMapFragment) getChildFragmentManager()
.findFragmentById(R.id.map);
mapFragment.getMapAsync(this);
}
private void setMarker() {
// TODO Auto-generated method stub
if(gmap!=null){
lat=loc.getLatitude();
lon=loc.getLongitude();
ll=new LatLng(lat, lon);
Toast.makeText(getActivity(), "lat"+lat, Toast.LENGTH_LONG).show();
mp=gmap.addMarker(new MarkerOptions().position(ll).title("Your Location"));
CameraUpdate center=CameraUpdateFactory.newLatLng(new LatLng(lat,lon));
CameraUpdate zoom=CameraUpdateFactory.zoomTo(15);
gmap.moveCamera(center);
gmap.animateCamera(zoom);
}
}
@Override
public void onMapReady(GoogleMap map) {
// TODO Auto-generated method stub
map.getUiSettings().setAllGesturesEnabled(true);
map.setMapType(GoogleMap.MAP_TYPE_HYBRID);
map.setMyLocationEnabled(true);
gmap=map;
setMarker();
}
public Location getLocation(){
lmgr=(LocationManager) ctx.getSystemService(Context.LOCATION_SERVICE);
isGpsEnabled=lmgr.isProviderEnabled(LocationManager.GPS_PROVIDER);
isNetworkAvailable=lmgr.isProviderEnabled(LocationManager.NETWORK_PROVIDER);
if(isGpsEnabled==true){
setLocationManager("gps");
}
else if(isNetworkAvailable==true){
setLocationManager("network");
}
return loc;
}
private boolean setLocationManager(String s){
if(s.equals("gps")){
Toast.makeText(getActivity(), "gps", Toast.LENGTH_LONG).show();
lmgr.requestLocationUpdates(LocationManager.GPS_PROVIDER, minTime, minDistance, this);
loc=lmgr.getLastKnownLocation(LocationManager.GPS_PROVIDER);
}
else{
lmgr.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, minTime, minDistance, this);
loc=lmgr.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
}
return isLocationSet;
}
@Override
public void onLocationChanged(Location location) {
}
@Override
public void onStatusChanged(String provider, int status, Bundle extras) {
// TODO Auto-generated method stub
}
@Override
public void onProviderEnabled(String provider) {
// TODO Auto-generated method stub
}
@Override
public void onProviderDisabled(String provider) {
// TODO Auto-generated method stub
}
}
选项卡 3 xml:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/nearbyplace"
xmlns:android="http://schemas.android.com/apk/res/android">
<fragment android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/map"
android:name="com.google.android.gms.maps.SupportMapFragment" />
</RelativeLayout>
标签适配器：
package com.example.prototype;
import com.example.prototype.tabs.BestOfferFragment;
import com.example.prototype.tabs.CategoriesrFragment;
import com.example.prototype.tabs.NearByPlacesFragment;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentPagerAdapter;
public class TabsPagerAdapter extends FragmentPagerAdapter {
BestOfferFragment frag1=new BestOfferFragment();
CategoriesrFragment frag2=new CategoriesrFragment();
NearByPlacesFragment frag3=new NearByPlacesFragment();
public TabsPagerAdapter(FragmentManager fm) {
super(fm);
// TODO Auto-generated constructor stub
}
Fragment f = null;
@Override
public Fragment getItem(int index) {
switch (index) {
case 0:
f= frag1; break;
case 1:
f= frag2; break;
case 2:
// Movies fragment activity
f= frag3; break;
}
return f;
}
@Override
public int getCount() {
// TODO Auto-generated method stub
return 3;
}
}
这是日志：
07-11 01:49:28.877: E/NativeCrypto(7463): ssl=0x616b4438 cert_verify_callback x509_store_ctx=0x6210aab0 arg=0x0
07-11 01:49:28.882: E/NativeCrypto(7463): ssl=0x616b4438 cert_verify_callback calling verifyCertificateChain authMethod=ECDHE_ECDSA
07-11 01:49:35.046: E/AndroidRuntime(7463): FATAL EXCEPTION: main
07-11 01:49:35.046: E/AndroidRuntime(7463): android.view.InflateException: Binary XML file line #8: Error inflating class fragment
07-11 01:49:35.046: E/AndroidRuntime(7463): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:704)
07-11 01:49:35.046: E/AndroidRuntime(7463): at android.view.LayoutInflater.rInflate(LayoutInflater.java:746)
07-11 01:49:35.046: E/AndroidRuntime(7463): at android.view.LayoutInflater.inflate(LayoutInflater.java:489)
07-11 01:49:35.046: E/AndroidRuntime(7463): at android.view.LayoutInflater.inflate(LayoutInflater.java:396)
07-11 01:49:35.046: E/AndroidRuntime(7463): at com.example.prototype.tabs.NearByPlacesFragment.onCreateView(NearByPlacesFragment.java:58)
07-11 01:49:35.046: E/AndroidRuntime(7463): at android.support.v4.app.Fragment.performCreateView(Fragment.java:1789)
07-11 01:49:35.046: E/AndroidRuntime(7463): at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:955)
07-11 01:49:35.046: E/AndroidRuntime(7463): at android.support.v4.app.FragmentManagerImpl.attachFragment(FragmentManager.java:1314)
07-11 01:49:35.046: E/AndroidRuntime(7463): at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:730)
07-11 01:49:35.046: E/AndroidRuntime(7463): at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1501)
07-11 01:49:35.046: E/AndroidRuntime(7463): at android.support.v4.app.FragmentManagerImpl.executePendingTransactions(FragmentManager.java:490)
07-11 01:49:35.046: E/AndroidRuntime(7463): at android.support.v4.app.FragmentPagerAdapter.finishUpdate(FragmentPagerAdapter.java:141)
07-11 01:49:35.046: E/AndroidRuntime(7463): at android.support.v4.view.ViewPager.populate(ViewPager.java:1105)
07-11 01:49:35.046: E/AndroidRuntime(7463): at android.support.v4.view.ViewPager.populate(ViewPager.java:951)
07-11 01:49:35.046: E/AndroidRuntime(7463): at android.support.v4.view.ViewPager.run(ViewPager.java:250)
07-11 01:49:35.046: E/AndroidRuntime(7463): at android.view.Choreographer$CallbackRecord.run(Choreographer.java:776)
07-11 01:49:35.046: E/AndroidRuntime(7463): at android.view.Choreographer.doCallbacks(Choreographer.java:579)
07-11 01:49:35.046: E/AndroidRuntime(7463): at android.view.Choreographer.doFrame(Choreographer.java:547)
07-11 01:49:35.046: E/AndroidRuntime(7463): at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:762)
07-11 01:49:35.046: E/AndroidRuntime(7463): at android.os.Handler.handleCallback(Handler.java:725)
07-11 01:49:35.046: E/AndroidRuntime(7463): at android.os.Handler.dispatchMessage(Handler.java:92)
07-11 01:49:35.046: E/AndroidRuntime(7463): at android.os.Looper.loop(Looper.java:153)
07-11 01:49:35.046: E/AndroidRuntime(7463): at android.app.ActivityThread.main(ActivityThread.java:5297)
07-11 01:49:35.046: E/AndroidRuntime(7463): at java.lang.reflect.Method.invokeNative(Native Method)
07-11 01:49:35.046: E/AndroidRuntime(7463): at java.lang.reflect.Method.invoke(Method.java:511)
07-11 01:49:35.046: E/AndroidRuntime(7463): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:833)
07-11 01:49:35.046: E/AndroidRuntime(7463): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:600)
07-11 01:49:35.046: E/AndroidRuntime(7463): at dalvik.system.NativeStart.main(Native Method)
07-11 01:49:35.046: E/AndroidRuntime(7463): Caused by: java.lang.IllegalArgumentException: Binary XML file line #8: Duplicate id 0x7f08006c, tag null, or parent id 0x7f08006b with another fragment for com.google.android.gms.maps.SupportMapFragment
07-11 01:49:35.046: E/AndroidRuntime(7463): at android.support.v4.app.FragmentManagerImpl.onCreateView(FragmentManager.java:2175)
07-11 01:49:35.046: E/AndroidRuntime(7463): at android.support.v4.view.LayoutInflaterCompatHC$FactoryWrapperHC.onCreateView(LayoutInflaterCompatHC.java:44)
07-11 01:49:35.046: E/AndroidRuntime(7463): at android.view.LayoutInflater$FactoryMerger.onCreateView(LayoutInflater.java:168)
07-11 01:49:35.046: E/AndroidRuntime(7463): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:675)
07-11 01:49:35.046: E/AndroidRuntime(7463): ... 27 more
运行 时间 exception:when 应用程序启动的原因是它初始化了所有选项卡并再次滑动到选项卡 3，即地图选项卡，代码正在尝试创建另一个尚未创建的地图片段yet destroyed 导致非法状态异常，有两种解决方案：
解决方案 1：
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
ctx=getActivity();
if (view != null) {
ViewGroup parent = (ViewGroup) view.getParent();
if (parent != null)
parent.removeView(view);
}
try {
view = inflater.inflate(R.layout.nearbyplaces, container, false);
} catch (InflateException e) {
}
//rest of code is same
}
在此我们首先替换现有片段，方法是将其从父片段中删除，然后再次添加..
解决方案 2：这是最佳解决方案：
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
ctx=getActivity();
if (view == null) {
view = inflater.inflate(R.layout.nearbyplaces, container, false);
}
//rest of code is same
return view;
}
确保您不会 运行 出现此错误的最佳方法是使 Fragment 扩展 SupportMapFragment 而不是在 Fragment 中嵌套一个。
我刚刚使用 ViewPager 和 FragmentPagerAdapter 将地图作为选项卡之一来完成这项工作。
这里是大体结构，注意不需要重写onCreateView()方法，也不需要inflate任何布局xml:
public class MyMapFragment extends SupportMapFragment implements OnMapReadyCallback {
private GoogleMap mMap;
private Marker marker;
public MyMapFragment() {
}
@Override
public void onResume() {
super.onResume();
Log.d("MyMap", "onResume");
setUpMapIfNeeded();
}
private void setUpMapIfNeeded() {
if (mMap == null) {
Log.d("MyMap", "setUpMapIfNeeded");
getMapAsync(this);
}
}
@Override
public void onMapReady(GoogleMap googleMap) {
Log.d("MyMap", "onMapReady");
mMap = googleMap;
setUpMap();
}
private void setUpMap() {
mMap.setMyLocationEnabled(true);
mMap.setMapType(GoogleMap.MAP_TYPE_HYBRID);
mMap.getUiSettings().setMapToolbarEnabled(false);
mMap.setOnMapClickListener(new GoogleMap.OnMapClickListener() {
@Override
public void onMapClick(LatLng point) {
Log.d("MyMap", "MapClick");
//remove previously placed Marker
if (marker != null) {
marker.remove();
}
//place marker where user just clicked
marker = mMap.addMarker(new MarkerOptions().position(point).title("Marker")
.icon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_MAGENTA)));
Log.d("MyMap", "MapClick After Add Marker");
}
});
}
}
结果：
我正在使用 ActionBar 选项卡，有三个选项卡，第三个选项卡有 Google 地图。 当我在第 1 和第 3 之间切换时，它崩溃，在第 1 和第 2 之间它也崩溃，但在第 2 和第 3 之间切换永远不会崩溃。我不知道为什么会这样。
代码MainActivity
package com.example.prototype;
import android.app.ActionBar;
import android.app.ActionBar.Tab;
import android.app.ActionBar.TabListener;
import android.app.Activity;
import android.support.v4.app.FragmentManager;
import android.app.FragmentTransaction;
import android.os.Bundle;
import android.support.v4.app.ActionBarDrawerToggle;
import android.support.v4.app.FragmentActivity;
import android.support.v4.view.ViewPager;
import android.support.v4.view.ViewPager.OnPageChangeListener;
import android.support.v4.widget.DrawerLayout;
import android.support.v4.widget.DrawerLayout.DrawerListener;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.Toast;
public class MainActivity extends FragmentActivity implements ActionBar.TabListener {
TabsPagerAdapter tabpager;
ViewPager pager;
DrawerLayout drawerLayout;
ActionBar action_bar;
ListView navigation_list;
@SuppressWarnings("deprecation")
ActionBarDrawerToggle drawerToggle;
String items[];
String tabs_list[]={"Best Offers","Categories","Near By Places"};
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.drawer_layout);
initComponents();
action_bar=getActionBar();
setNavigationList();
setTabs();
}
@SuppressWarnings("deprecation")
private void setTabs() {
action_bar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);
for (String tab_name : tabs_list) {
action_bar.addTab(action_bar.newTab().setText(tab_name)
.setTabListener(this));
}
pager.setAdapter(tabpager);
pager.setOnPageChangeListener(new OnPageChangeListener() {
@Override
public void onPageSelected(int arg0) {
// TODO Auto-generated method stub
action_bar.setSelectedNavigationItem(arg0);;
}
@Override
public void onPageScrolled(int arg0, float arg1, int arg2) {
// TODO Auto-generated method stub
}
@Override
public void onPageScrollStateChanged(int arg0) {
// TODO Auto-generated method stub
}
});
}
@SuppressWarnings("deprecation")
private void setNavigationList() {
int open=R.string.navigation_open;
int close=R.string.navigation_close;
navigation_list.setAdapter(new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, items));
drawerToggle=new ActionBarDrawerToggle(this,drawerLayout, R.drawable.ic_menu_white_18dp,open,close){
public void onDrawerClosed(View view) {
super.onDrawerClosed(view);
action_bar.show();
}
public void onDrawerOpened(View drawerView) {
super.onDrawerOpened(drawerView);
action_bar.hide();
}
};
drawerLayout.setDrawerListener(drawerToggle);
action_bar.setDisplayHomeAsUpEnabled(true);
action_bar.setHomeButtonEnabled(true);
}
@Override
protected void onPostCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onPostCreate(savedInstanceState);
drawerToggle.syncState();
}
private void initComponents() {
// TODO Auto-generated method stub
drawerLayout=(DrawerLayout) findViewById(R.id.drawer_layout);
action_bar=getActionBar();
navigation_list=(ListView) findViewById(R.id.left_drawer);
items=getResources().getStringArray(R.array.navigation_drawer);
pager=(ViewPager) findViewById(R.id.pager);
FragmentManager m=getSupportFragmentManager();
tabpager=new TabsPagerAdapter(m);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
if (id == R.id.search_menu) {
Toast.makeText(getApplicationContext(), "Searched Clicked ", Toast.LENGTH_LONG).show();
return true;
}
if (id == R.id.share_menu) {
Toast.makeText(getApplicationContext(), "Share Clicked ", Toast.LENGTH_LONG).show();
return true;
}
if (id == R.id.navigation_menu) {
Toast.makeText(getApplicationContext(), "Navigation Clicked ", Toast.LENGTH_LONG).show();
return true;
}
return super.onOptionsItemSelected(item);
}
@Override
public void onTabSelected(Tab tab, FragmentTransaction ft) {
// TODO Auto-generated method stub
pager.setCurrentItem(tab.getPosition());
}
@Override
public void onTabUnselected(Tab tab, FragmentTransaction ft) {
// TODO Auto-generated method stub
}
@Override
public void onTabReselected(Tab tab, FragmentTransaction ft) {
// TODO Auto-generated method stub
}
}
选项卡 1 java 代码：
public class BestOfferFragment extends Fragment{
View rootView;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
rootView = inflater.inflate(R.layout.bestoffer, container, false);
}
}
选项卡 2 java 代码：
public class CategoriesrFragment extends Fragment{
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.categories, container, false);
return rootView;
}
}
选项卡 3 java 代码：
package com.example.prototype.tabs;
import java.util.Timer;
import com.example.prototype.MainActivity;
import com.example.prototype.R;
import com.google.android.gms.maps.CameraUpdate;
import com.google.android.gms.maps.CameraUpdateFactory;
import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.GoogleMapOptions;
import com.google.android.gms.maps.MapFragment;
import com.google.android.gms.maps.OnMapReadyCallback;
import com.google.android.gms.maps.SupportMapFragment;
import com.google.android.gms.maps.model.Circle;
import com.google.android.gms.maps.model.CircleOptions;
import com.google.android.gms.maps.model.LatLng;
import com.google.android.gms.maps.model.Marker;
import com.google.android.gms.maps.model.MarkerOptions;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.app.Activity;
import android.content.Context;
import android.graphics.Color;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Toast;
public class NearByPlacesFragment extends Fragment implements OnMapReadyCallback, LocationListener {
static int i=0;
GoogleMap gmap;
Marker mp;
LatLng ll;
Location l;
Context ctx;
double lat,lon;
boolean isGpsEnabled,isNetworkAvailable,isLocationSet;
LocationManager lmgr;
long minTime = 1000;
long minDistance = 1;
Location loc;
SupportMapFragment mapFragment;
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
ctx=getActivity();
super.onCreateView(inflater, container, savedInstanceState);
if(mapFragment!=null){ Toast.makeText(getActivity(), "fragment exist`", 1000).show();}
View rootView = inflater.inflate(R.layout.nearbyplaces, container, false);
loc=getLocation();
if(gmap==null)
setMap();
Toast.makeText(getActivity(), "created`", 1000).show();
return rootView;
}
private void setMap() {
// TODO Auto-generated method stub
mapFragment = (SupportMapFragment) getChildFragmentManager()
.findFragmentById(R.id.map);
mapFragment.getMapAsync(this);
}
private void setMarker() {
// TODO Auto-generated method stub
if(gmap!=null){
lat=loc.getLatitude();
lon=loc.getLongitude();
ll=new LatLng(lat, lon);
Toast.makeText(getActivity(), "lat"+lat, Toast.LENGTH_LONG).show();
mp=gmap.addMarker(new MarkerOptions().position(ll).title("Your Location"));
CameraUpdate center=CameraUpdateFactory.newLatLng(new LatLng(lat,lon));
CameraUpdate zoom=CameraUpdateFactory.zoomTo(15);
gmap.moveCamera(center);
gmap.animateCamera(zoom);
}
}
@Override
public void onMapReady(GoogleMap map) {
// TODO Auto-generated method stub
map.getUiSettings().setAllGesturesEnabled(true);
map.setMapType(GoogleMap.MAP_TYPE_HYBRID);
map.setMyLocationEnabled(true);
gmap=map;
setMarker();
}
public Location getLocation(){
lmgr=(LocationManager) ctx.getSystemService(Context.LOCATION_SERVICE);
isGpsEnabled=lmgr.isProviderEnabled(LocationManager.GPS_PROVIDER);
isNetworkAvailable=lmgr.isProviderEnabled(LocationManager.NETWORK_PROVIDER);
if(isGpsEnabled==true){
setLocationManager("gps");
}
else if(isNetworkAvailable==true){
setLocationManager("network");
}
return loc;
}
private boolean setLocationManager(String s){
if(s.equals("gps")){
Toast.makeText(getActivity(), "gps", Toast.LENGTH_LONG).show();
lmgr.requestLocationUpdates(LocationManager.GPS_PROVIDER, minTime, minDistance, this);
loc=lmgr.getLastKnownLocation(LocationManager.GPS_PROVIDER);
}
else{
lmgr.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, minTime, minDistance, this);
loc=lmgr.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
}
return isLocationSet;
}
@Override
public void onLocationChanged(Location location) {
}
@Override
public void onStatusChanged(String provider, int status, Bundle extras) {
// TODO Auto-generated method stub
}
@Override
public void onProviderEnabled(String provider) {
// TODO Auto-generated method stub
}
@Override
public void onProviderDisabled(String provider) {
// TODO Auto-generated method stub
}
}
选项卡 3 xml:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/nearbyplace"
xmlns:android="http://schemas.android.com/apk/res/android">
<fragment android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/map"
android:name="com.google.android.gms.maps.SupportMapFragment" />
</RelativeLayout>
标签适配器：
package com.example.prototype;
import com.example.prototype.tabs.BestOfferFragment;
import com.example.prototype.tabs.CategoriesrFragment;
import com.example.prototype.tabs.NearByPlacesFragment;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentPagerAdapter;
public class TabsPagerAdapter extends FragmentPagerAdapter {
BestOfferFragment frag1=new BestOfferFragment();
CategoriesrFragment frag2=new CategoriesrFragment();
NearByPlacesFragment frag3=new NearByPlacesFragment();
public TabsPagerAdapter(FragmentManager fm) {
super(fm);
// TODO Auto-generated constructor stub
}
Fragment f = null;
@Override
public Fragment getItem(int index) {
switch (index) {
case 0:
f= frag1; break;
case 1:
f= frag2; break;
case 2:
// Movies fragment activity
f= frag3; break;
}
return f;
}
@Override
public int getCount() {
// TODO Auto-generated method stub
return 3;
}
}
这是日志：
07-11 01:49:28.877: E/NativeCrypto(7463): ssl=0x616b4438 cert_verify_callback x509_store_ctx=0x6210aab0 arg=0x0
07-11 01:49:28.882: E/NativeCrypto(7463): ssl=0x616b4438 cert_verify_callback calling verifyCertificateChain authMethod=ECDHE_ECDSA
07-11 01:49:35.046: E/AndroidRuntime(7463): FATAL EXCEPTION: main
07-11 01:49:35.046: E/AndroidRuntime(7463): android.view.InflateException: Binary XML file line #8: Error inflating class fragment
07-11 01:49:35.046: E/AndroidRuntime(7463): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:704)
07-11 01:49:35.046: E/AndroidRuntime(7463): at android.view.LayoutInflater.rInflate(LayoutInflater.java:746)
07-11 01:49:35.046: E/AndroidRuntime(7463): at android.view.LayoutInflater.inflate(LayoutInflater.java:489)
07-11 01:49:35.046: E/AndroidRuntime(7463): at android.view.LayoutInflater.inflate(LayoutInflater.java:396)
07-11 01:49:35.046: E/AndroidRuntime(7463): at com.example.prototype.tabs.NearByPlacesFragment.onCreateView(NearByPlacesFragment.java:58)
07-11 01:49:35.046: E/AndroidRuntime(7463): at android.support.v4.app.Fragment.performCreateView(Fragment.java:1789)
07-11 01:49:35.046: E/AndroidRuntime(7463): at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:955)
07-11 01:49:35.046: E/AndroidRuntime(7463): at android.support.v4.app.FragmentManagerImpl.attachFragment(FragmentManager.java:1314)
07-11 01:49:35.046: E/AndroidRuntime(7463): at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:730)
07-11 01:49:35.046: E/AndroidRuntime(7463): at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1501)
07-11 01:49:35.046: E/AndroidRuntime(7463): at android.support.v4.app.FragmentManagerImpl.executePendingTransactions(FragmentManager.java:490)
07-11 01:49:35.046: E/AndroidRuntime(7463): at android.support.v4.app.FragmentPagerAdapter.finishUpdate(FragmentPagerAdapter.java:141)
07-11 01:49:35.046: E/AndroidRuntime(7463): at android.support.v4.view.ViewPager.populate(ViewPager.java:1105)
07-11 01:49:35.046: E/AndroidRuntime(7463): at android.support.v4.view.ViewPager.populate(ViewPager.java:951)
07-11 01:49:35.046: E/AndroidRuntime(7463): at android.support.v4.view.ViewPager.run(ViewPager.java:250)
07-11 01:49:35.046: E/AndroidRuntime(7463): at android.view.Choreographer$CallbackRecord.run(Choreographer.java:776)
07-11 01:49:35.046: E/AndroidRuntime(7463): at android.view.Choreographer.doCallbacks(Choreographer.java:579)
07-11 01:49:35.046: E/AndroidRuntime(7463): at android.view.Choreographer.doFrame(Choreographer.java:547)
07-11 01:49:35.046: E/AndroidRuntime(7463): at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:762)
07-11 01:49:35.046: E/AndroidRuntime(7463): at android.os.Handler.handleCallback(Handler.java:725)
07-11 01:49:35.046: E/AndroidRuntime(7463): at android.os.Handler.dispatchMessage(Handler.java:92)
07-11 01:49:35.046: E/AndroidRuntime(7463): at android.os.Looper.loop(Looper.java:153)
07-11 01:49:35.046: E/AndroidRuntime(7463): at android.app.ActivityThread.main(ActivityThread.java:5297)
07-11 01:49:35.046: E/AndroidRuntime(7463): at java.lang.reflect.Method.invokeNative(Native Method)
07-11 01:49:35.046: E/AndroidRuntime(7463): at java.lang.reflect.Method.invoke(Method.java:511)
07-11 01:49:35.046: E/AndroidRuntime(7463): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:833)
07-11 01:49:35.046: E/AndroidRuntime(7463): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:600)
07-11 01:49:35.046: E/AndroidRuntime(7463): at dalvik.system.NativeStart.main(Native Method)
07-11 01:49:35.046: E/AndroidRuntime(7463): Caused by: java.lang.IllegalArgumentException: Binary XML file line #8: Duplicate id 0x7f08006c, tag null, or parent id 0x7f08006b with another fragment for com.google.android.gms.maps.SupportMapFragment
07-11 01:49:35.046: E/AndroidRuntime(7463): at android.support.v4.app.FragmentManagerImpl.onCreateView(FragmentManager.java:2175)
07-11 01:49:35.046: E/AndroidRuntime(7463): at android.support.v4.view.LayoutInflaterCompatHC$FactoryWrapperHC.onCreateView(LayoutInflaterCompatHC.java:44)
07-11 01:49:35.046: E/AndroidRuntime(7463): at android.view.LayoutInflater$FactoryMerger.onCreateView(LayoutInflater.java:168)
07-11 01:49:35.046: E/AndroidRuntime(7463): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:675)
07-11 01:49:35.046: E/AndroidRuntime(7463): ... 27 more
运行 时间 exception:when 应用程序启动的原因是它初始化了所有选项卡并再次滑动到选项卡 3，即地图选项卡，代码正在尝试创建另一个尚未创建的地图片段yet destroyed 导致非法状态异常，有两种解决方案：
解决方案 1：
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
ctx=getActivity();
if (view != null) {
ViewGroup parent = (ViewGroup) view.getParent();
if (parent != null)
parent.removeView(view);
}
try {
view = inflater.inflate(R.layout.nearbyplaces, container, false);
} catch (InflateException e) {
}
//rest of code is same
}
在此我们首先替换现有片段，方法是将其从父片段中删除，然后再次添加..
解决方案 2：这是最佳解决方案：
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
ctx=getActivity();
if (view == null) {
view = inflater.inflate(R.layout.nearbyplaces, container, false);
}
//rest of code is same
return view;
}
确保您不会 运行 出现此错误的最佳方法是使 Fragment 扩展 SupportMapFragment 而不是在 Fragment 中嵌套一个。
我刚刚使用 ViewPager 和 FragmentPagerAdapter 将地图作为选项卡之一来完成这项工作。
这里是大体结构，注意不需要重写onCreateView()方法，也不需要inflate任何布局xml:
public class MyMapFragment extends SupportMapFragment implements OnMapReadyCallback {
private GoogleMap mMap;
private Marker marker;
public MyMapFragment() {
}
@Override
public void onResume() {
super.onResume();
Log.d("MyMap", "onResume");
setUpMapIfNeeded();
}
private void setUpMapIfNeeded() {
if (mMap == null) {
Log.d("MyMap", "setUpMapIfNeeded");
getMapAsync(this);
}
}
@Override
public void onMapReady(GoogleMap googleMap) {
Log.d("MyMap", "onMapReady");
mMap = googleMap;
setUpMap();
}
private void setUpMap() {
mMap.setMyLocationEnabled(true);
mMap.setMapType(GoogleMap.MAP_TYPE_HYBRID);
mMap.getUiSettings().setMapToolbarEnabled(false);
mMap.setOnMapClickListener(new GoogleMap.OnMapClickListener() {
@Override
public void onMapClick(LatLng point) {
Log.d("MyMap", "MapClick");
//remove previously placed Marker
if (marker != null) {
marker.remove();
}
//place marker where user just clicked
marker = mMap.addMarker(new MarkerOptions().position(point).title("Marker")
.icon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_MAGENTA)));
Log.d("MyMap", "MapClick After Add Marker");
}
});
}
}
结果：