按钮点击不同 activity 视情况而定

Question

我有一个没有互联网连接的静态页面....我必须在两个活动中使用这个....没有互联网连接的静态页面有点击重试按钮...

在那个点击重试按钮上我必须改变 activity

场景：-------- 1.when im splash activity（无互联网）---> 它应该加载 homeactvivity

2.when 我联系我们 activity（没有互联网）---> 它应该加载联系我们 activity

需要帮助怎么办？？？

我得到了一些建议，例如使用布尔类型的 isFromSplash 之类的标志，当从 splash 导航时为 true，当联系我们时为 false...

我该如何实现？？？？？

    binding.btnTaptoretry.setOnClickListener {
        if (this.isDeviceOnlineStatus(this)){
            if (isFromSplash==true) { //this is red `isFromSplash`
                val intent = Intent(this, HomeActivity::class.java)
                startActivity(intent)
                finish()
            }
            else{
                val intent = Intent(this, AboutUsActivity::class.java)
                startActivity(intent)
                finish()   
            }
        }
    }

Answer 1

使用此代码

class 主活动：AppCompatActivity(){

lateinit var button : Button

override fun onCreate(savedInstanceState: Bundle?) {
    super.onCreate(savedInstanceState)
    setContentView(R.layout.activity_main)
    button = findViewById(R.id.button1)
    button.setOnClickListener(listener)
}

val listener= View.OnClickListener { view ->
    when (view.getId()) {
        if(view.getid == R.id.button1)-> {
            // Do some work here
        }
    }
}

}

Answer 2

飞溅Activity.Java

import androidx.appcompat.app.AppCompatActivity;

import android.content.Intent;
import android.os.Bundle;

import static com.saqib.app2.RetryActivity.SOURCE;
import static com.saqib.app2.RetryActivity.SPLASH;

public class SplashActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        if(!Utils.isInternetConnection(this)){
            Intent intent = new Intent(SplashActivity.this, RetryActivity.class);
            intent.putExtra(SOURCE, SPLASH);
            startActivity(intent);
            finish();
            return;
        }
        setContentView(R.layout.activity_main);
    }
}

联系activity.java

import androidx.appcompat.app.AppCompatActivity;

import android.content.Intent;
import android.os.Bundle;

import static com.saqib.app2.RetryActivity.CONTACT;
import static com.saqib.app2.RetryActivity.SOURCE;
import static com.saqib.app2.RetryActivity.SPLASH;

public class ContactActivity extends AppCompatActivity {

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

        if(!Utils.isInternetConnection(this)){
            Intent intent = new Intent(ContactActivity.this, RetryActivity.class);
            intent.putExtra(SOURCE, CONTACT);
            startActivity(intent);
            finish();
            return;
        }

        setContentView(R.layout.activity_contact);
    }
}

Utils.Java

import android.content.Context;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;

public class Utils {

    public static boolean isInternetConnection(Context context){
        ConnectivityManager cm =(ConnectivityManager)context.getSystemService(Context.CONNECTIVITY_SERVICE);
        NetworkInfo activeNetwork = cm.getActiveNetworkInfo();
        boolean isConnected = activeNetwork != null &&
                activeNetwork.isConnectedOrConnecting();
        return isConnected;
    }
}

RetryActivity.java（重试转到指定的 activity）

import androidx.appcompat.app.AppCompatActivity;

import android.content.Context;
import android.content.Intent;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.Switch;

public class RetryActivity extends AppCompatActivity {

    public static final String SPLASH = "SPLASH";
    public static final String CONTACT = "CONTACT";
    public static final String SOURCE = "SOURCE";
    Button btnRetry;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_retry);
        Intent intent = getIntent();
        final String source = intent.getExtras().getString(SOURCE);
        btnRetry = findViewById(R.id.btnRetry);
        btnRetry.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {

                if(Utils.isInternetConnection(RetryActivity.this)) {
                    switch (source) {
                        case SPLASH:
                            startActivity(new Intent(RetryActivity.this, SplashActivity.class));
                            finish();
                            break;
                        case CONTACT:
                            startActivity(new Intent(RetryActivity.this, ContactActivity.class));
                            finish();
                            break;
                    }
                }

            }
        });
    }


}

使用 Intent 发送数据并接收来自 splash 或 contact 的数据。

Intent intent = getIntent();
 final String source = intent.getExtras().getString(SOURCE);

这是从哪里获得历史的魔法。从哪里来的。

按钮点击不同 activity 视情况而定

button click to different activity depending upon cases

android

android-intent

kotlin