扩展导航抽屉无法更改 activity。这是怎么回事？

Question

我创建了一个带导航抽屉的 BaseActivity class，另一个 class CheckList 扩展了 BaseActivity 以具有导航抽屉。

在 BaseActivity 中，我可以通过导航抽屉将 activity 更改为 CheckList。但是在清单中。即使我能看到抽屉，也无法更改 class。

基础活动：

public class BaseActivity extends AppCompatActivity{

protected DrawerLayout drawerLayout;
protected ListView drawerList;

protected ActionBarDrawerToggle drawerToggle;
protected CharSequence mDrawerTitle;
protected CharSequence mTitle;

protected String[] drawer_menu;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    initActionBar();
    initDrawer();
    initDrawerList();
}

protected void initActionBar() {
    getSupportActionBar().setHomeButtonEnabled(true);
    getSupportActionBar().setDisplayHomeAsUpEnabled(true);
    getSupportActionBar().setHomeAsUpIndicator(R.drawable.ic_drawer);
}

protected void initDrawer() {
    setContentView(R.layout.drawer);

    drawerLayout = (DrawerLayout)findViewById(R.id.drawer_layout);
    drawerList = (ListView)findViewById(R.id.left_drawer);

    mTitle = mDrawerTitle = getTitle();
    drawerToggle = new ActionBarDrawerToggle(
            this,
            drawerLayout,
            R.drawable.ic_drawer,
            R.string.drawer_open,
            R.string.drawer_close) {

        @Override
        public void onDrawerClosed(View drawerView) {
            super.onDrawerClosed(drawerView);
            getSupportActionBar().setTitle(mTitle);
        }

        @Override
        public void onDrawerOpened(View drawerView) {
            super.onDrawerOpened(drawerView);
            getSupportActionBar().setTitle(mDrawerTitle);
        }
    };
    drawerToggle.syncState();

    drawerLayout.setDrawerListener(drawerToggle);
}

protected void initDrawerList() {
    drawer_menu = this.getResources().getStringArray(R.array.drawer_menu);
    ArrayAdapter<String> adapter =  new ArrayAdapter<String>(this, R.layout.drawer_list_item, drawer_menu);
    drawerList.setAdapter(adapter);

    drawerList.setOnItemClickListener(new DrawerItemClickListener());
}

//respond when click the ic_drawer
@Override
public boolean onOptionsItemSelected(MenuItem item) {
    if(drawerToggle.onOptionsItemSelected(item)) {
        return true;
    }
    return super.onOptionsItemSelected(item);
}

protected class DrawerItemClickListener implements ListView.OnItemClickListener {
    @Override
    public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
        selectItem(position);
    }
}

protected void selectItem(int position) {
    //Fragment fragment = null;
    switch (position) {
        case 0:
            break;
        case 1:
            Intent main = new Intent();
            main.setClass(getApplicationContext(), MainActivity.class);
            startActivity(main);
            finish();
            break;
        case 2:
            Intent checklist = new Intent();
            checklist.setClass(getApplicationContext(), CheckList.class);
            startActivity(checklist);
            finish();
            break;
        default:
            break;
    }

    /*FragmentManager fragmentManager = getFragmentManager();
    fragmentManager.beginTransaction().replace(R.id.content_frame, fragment).commit();*/

    drawerList.setItemChecked(position, true);
    setTitle(drawer_menu[position]);
    drawerLayout.closeDrawer(drawerList);
}

@Override
public void setTitle(CharSequence title) {
    mTitle = title;
    getSupportActionBar().setTitle(mTitle);
}

@Override
protected void onPostCreate(Bundle savedInstanceState) {
    super.onPostCreate(savedInstanceState);
    drawerToggle.syncState();
}

@Override
public void onConfigurationChanged(Configuration newConfig) {
    super.onConfigurationChanged(newConfig);
    drawerToggle.onConfigurationChanged(newConfig);
}
}

清单：

public class CheckList extends BaseActivity implements OnClickListener {

Button addBtn;
ListView listView;

ArrayList<String> checkListItem;
ArrayAdapter<String> adapter;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    getLayoutInflater().inflate(R.layout.checklist, drawerLayout);

    addBtn = (Button)findViewById(R.id.addBtn);
    listView = (ListView)findViewById(R.id.listItems);

    addBtn.setOnClickListener(this);

    checkListItem = new ArrayList<String>();
    adapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, checkListItem);
    listView.setAdapter(adapter);

    checkListItem.add(getString(R.string.cl_passport));
    checkListItem.add(getString(R.string.cl_charger));
    checkListItem.add(getString(R.string.cl_camera));

    registerForContextMenu(listView);
}

@Override
public void onCreateContextMenu(ContextMenu menu, View v, ContextMenu.ContextMenuInfo menuInfo) {
    super.onCreateContextMenu(menu, v, menuInfo);
    MenuInflater inflater = getMenuInflater();
    inflater.inflate(R.menu.checklist_contextmenu, menu);
}

@Override
public boolean onContextItemSelected(MenuItem item) {
    final AdapterView.AdapterContextMenuInfo info = (AdapterView.AdapterContextMenuInfo)item.getMenuInfo();
    switch (item.getItemId()) {
        case R.id.cl_contextmenu_delete:
            checkListItem.remove(info.position);
            adapter.notifyDataSetChanged();
            return true;
        case R.id.cl_contextmenu_edit:
            AlertDialog.Builder alertDialog = new AlertDialog.Builder(CheckList.this);
            alertDialog.setTitle(getString(R.string.cl_editItem));
            final EditText edit = new EditText(this);
            edit.setText(checkListItem.get(info.position));
            edit.setSelectAllOnFocus(true);
            alertDialog.setView(edit);
            alertDialog.setCancelable(false);
            alertDialog.setPositiveButton(getString(R.string.ok), new DialogInterface.OnClickListener() {
                @Override
                public void onClick(DialogInterface dialog, int which) {
                    checkListItem.set(info.position, edit.getText().toString());
                    adapter.notifyDataSetChanged();
                }
            });
            alertDialog.setNegativeButton(getString(R.string.cancel), new DialogInterface.OnClickListener() {
                @Override
                public void onClick(DialogInterface dialog, int which) {
                    dialog.cancel();
                }
            });
            alertDialog.create();
            alertDialog.show();
            return true;
        default:
            return super.onContextItemSelected(item);
    }
}

@Override
public void onClick(View v) {
    if(v==this.addBtn) {
        AlertDialog.Builder alertDialog = new AlertDialog.Builder(CheckList.this);
        alertDialog.setTitle(getString(R.string.cl_input));
        final EditText checkListInput = new EditText(this);
        alertDialog.setView(checkListInput);
        alertDialog.setCancelable(false);
        alertDialog.setPositiveButton(getString(R.string.ok), new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {
                checkListItem.add(checkListInput.getText().toString());
            }
        });
        alertDialog.setNegativeButton(getString(R.string.cancel), new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {
                dialog.cancel();
            }
        });
        alertDialog.create();
        alertDialog.show();
    }
}
}

我不能简单地将 class 更改为 CheckList 中的 MainActivity。但是在BaseActivity中，我可以同时更改为MainActivity和CheckList。

非常感谢!!

已更新这是我的 drawer.xml 文件

<android.support.v4.widget.DrawerLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent">

<!-- The main content view -->
<FrameLayout
    android:id="@+id/content_frame"
    android:layout_width="match_parent"
    android:layout_height="match_parent" >
    <!-- Add content here -->
</FrameLayout>

<!-- The navigation drawer -->
<ListView android:id="@+id/left_drawer"
    android:layout_width="260dp"
    android:layout_height="match_parent"
    android:layout_gravity="start"
    android:choiceMode="singleChoice"
    android:divider="#e5e5e5"
    android:dividerHeight="1dp"
    android:background="#d6d6d6"/>
</android.support.v4.widget.DrawerLayout>

Answer 1

您无法单击抽屉的列表项，因为您将 CheckList Activity 的布局直接扩展到 BaseActivity 的 DrawerLayout .这导致它成为 DrawerLayout 的所有子 View 的 "on top"，并且您的点击不会传播到下面的抽屉 ListView。相反，您想将 CheckList 的布局膨胀到 DrawerLayout.

中的 content_frame FrameLayout

在 BaseActivity class 中为 FrameLayout 添加一个 protected 字段，并像其他 View 一样初始化它。

public class BaseActivity extends AppCompatActivity {

    protected DrawerLayout drawerLayout;
    protected ListView drawerList;
    protected FrameLayout contentFrame;
    ...

    protected void initDrawer() {
        setContentView(R.layout.drawer);

        drawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
        drawerList = (ListView) findViewById(R.id.left_drawer);
        contentFrame = (FrameLayout) findViewById(R.id.content_frame);
        ...
    }
}

然后将CheckList中的inflate()调用改成如下：

getLayoutInflater().inflate(R.layout.checklist, contentFrame);

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