第一次开通智能手机应用程序的活动

Question

晚上好，我将开始一个活动的主要布局，第一次在智能手机上开始的应用程序，我该怎么办？ 这是我的主要活动...当我的apo开始时，您可以看到我的activity_main选择通知从firebase收回，当我设置通知时，应用程序将您重定向到另一个activity_mainweb当我放置webview时，我想看到只有在第一次第一activity_main布局

公共类MainActivity扩展AppCompatActivity {

private static final String TAG = "MainActivity"; 

@Override 
protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.activity_main); 

    // If a notification message is tapped, any data accompanying the notification 
    // message is available in the intent extras. In this sample the launcher 
    // intent is fired when the notification is tapped, so any accompanying data would 
    // be handled here. If you want a different intent fired, set the click_action 
    // field of the notification message to the desired intent. The launcher intent 
    // is used when no click_action is specified. 
    // 
    // Handle possible data accompanying notification message. 
    // [START handle_data_extras] 
    if (getIntent().getExtras() != null) { 
     for (String key : getIntent().getExtras().keySet()) { 
      Object value = getIntent().getExtras().get(key); 
      Log.d(TAG, "Key: " + key + " Value: " + value); 
     } 
    } 
    // [END handle_data_extras] 

    Button subscribeButton = (Button) findViewById(R.id.subscribeButton0); 
    subscribeButton.setOnClickListener(new View.OnClickListener() { 
     @Override 
     public void onClick(View v) { 
      // [START subscribe_topics] 
      FirebaseMessaging.getInstance().subscribeToTopic("INTERIORDESIGN150H"); 
      // [END subscribe_topics] 

      // Log and toast 
      String msg = getString(R.string.msg_subscribed); 
      Log.d(TAG, msg); 
      Toast.makeText(MainActivity.this, msg, Toast.LENGTH_SHORT).show(); 
     } 
    }); 

    Button subscribeButton1 = (Button) findViewById(R.id.subscribeButton1); 
    subscribeButton1.setOnClickListener(new View.OnClickListener() { 
     @Override 
     public void onClick(View v) { 
      // [START subscribe_topics] 
      FirebaseMessaging.getInstance().subscribeToTopic("INTERIORDESIGN300H"); 
      // [END subscribe_topics] 

      // Log and toast 
      String msg = getString(R.string.msg_subscribed); 
      Log.d(TAG, msg); 
      Toast.makeText(MainActivity.this, msg, Toast.LENGTH_SHORT).show(); 
     } 
    }); 




    Button subscribeButton2= (Button) findViewById(R.id.subscribeButton2); 
    subscribeButton2.setOnClickListener(new View.OnClickListener() { 
     @Override 
     public void onClick(View v) { 
      // [START subscribe_topics] 
      FirebaseMessaging.getInstance().subscribeToTopic("GARDENDESIGN150H"); 
      // [END subscribe_topics] 

      // Log and toast 
      String msg = getString(R.string.msg_subscribed); 
      Log.d(TAG, msg); 
      Toast.makeText(MainActivity.this, msg, Toast.LENGTH_SHORT).show(); 
     } 
    }); 



    Button subscribeButton3 = (Button) findViewById(R.id.subscribeButton3); 
    subscribeButton3.setOnClickListener(new View.OnClickListener() { 
     @Override 
     public void onClick(View v) { 
      // [START subscribe_topics] 
      FirebaseMessaging.getInstance().subscribeToTopic("GARDENDESIGN300H"); 
      // [END subscribe_topics] 

      // Log and toast 
      String msg = getString(R.string.msg_subscribed); 
      Log.d(TAG, msg); 
      Toast.makeText(MainActivity.this, msg, Toast.LENGTH_SHORT).show(); 
     } 
    }); 




    Button subscribeButton4 = (Button) findViewById(R.id.subscribeButton4); 
    subscribeButton4.setOnClickListener(new View.OnClickListener() { 
     @Override 
     public void onClick(View v) { 
      // [START subscribe_topics] 
      FirebaseMessaging.getInstance().subscribeToTopic("VISUALDESIGN150H"); 
      // [END subscribe_topics] 

      // Log and toast 
      String msg = getString(R.string.msg_subscribed); 
      Log.d(TAG, msg); 
      Toast.makeText(MainActivity.this, msg, Toast.LENGTH_SHORT).show(); 
     } 
    }); 




    Button subscribeButton5 = (Button) findViewById(R.id.subscribeButton5); 
    subscribeButton5.setOnClickListener(new View.OnClickListener() { 
     @Override 
     public void onClick(View v) { 
      // [START subscribe_topics] 
      FirebaseMessaging.getInstance().subscribeToTopic("PRODUCTDESIGN150H"); 
      // [END subscribe_topics] 

      // Log and toast 
      String msg = getString(R.string.msg_subscribed); 
      Log.d(TAG, msg); 
      Toast.makeText(MainActivity.this, msg, Toast.LENGTH_SHORT).show(); 
     } 
    }); 



    Button subscribeButton6 = (Button) findViewById(R.id.subscribeButton6); 
    subscribeButton6.setOnClickListener(new View.OnClickListener() { 
     @Override 
     public void onClick(View v) { 
      // [START subscribe_topics] 
      FirebaseMessaging.getInstance().subscribeToTopic("MOTIONDESIGN150H"); 
      // [END subscribe_topics] 

      // Log and toast 
      String msg = getString(R.string.msg_subscribed); 
      Log.d(TAG, msg); 
      Toast.makeText(MainActivity.this, msg, Toast.LENGTH_SHORT).show(); 
     } 
    }); 



    Button subscribeButton7 = (Button) findViewById(R.id.subscribeButton7); 
    subscribeButton7.setOnClickListener(new View.OnClickListener() { 
     @Override 
     public void onClick(View v) { 
      // [START subscribe_topics] 
      FirebaseMessaging.getInstance().subscribeToTopic("GRAPHICDESIGN150H"); 
      // [END subscribe_topics] 

      // Log and toast 
      String msg = getString(R.string.msg_subscribed); 
      Log.d(TAG, msg); 
      Toast.makeText(MainActivity.this, msg, Toast.LENGTH_SHORT).show(); 
     } 
    }); 
    Button Button = (Button) findViewById(R.id.subscribeButton0); 

    Button.setOnClickListener(new View.OnClickListener(){ 
     public void onClick(View v){ 
      startActivity(new Intent(MainActivity.this, MainActivityweb.class)); 
     } 
    }); 
    Button Button1 = (Button) findViewById(R.id.subscribeButton1); 

    Button1.setOnClickListener(new View.OnClickListener(){ 
     public void onClick(View v){ 
      startActivity(new Intent(MainActivity.this, MainActivityweb.class)); 
     } 
    }); 
    Button Button2 = (Button) findViewById(R.id.subscribeButton2); 

    Button2.setOnClickListener(new View.OnClickListener(){ 
     public void onClick(View v){ 
      startActivity(new Intent(MainActivity.this, MainActivityweb.class)); 
     } 
    }); 
    Button Button3 = (Button) findViewById(R.id.subscribeButton3); 

    Button3.setOnClickListener(new View.OnClickListener(){ 
     public void onClick(View v){ 
      startActivity(new Intent(MainActivity.this, MainActivityweb.class)); 
     } 
    }); 
    Button Button4 = (Button) findViewById(R.id.subscribeButton4); 

    Button4.setOnClickListener(new View.OnClickListener(){ 
     public void onClick(View v){ 
      startActivity(new Intent(MainActivity.this, MainActivityweb.class)); 
     } 
    }); 
    Button Button5 = (Button) findViewById(R.id.subscribeButton5); 

    Button5.setOnClickListener(new View.OnClickListener(){ 
     public void onClick(View v){ 
      startActivity(new Intent(MainActivity.this, MainActivityweb.class)); 
     } 
    }); 
    Button Button6 = (Button) findViewById(R.id.subscribeButton6); 

    Button6.setOnClickListener(new View.OnClickListener(){ 
     public void onClick(View v){ 
      startActivity(new Intent(MainActivity.this, MainActivityweb.class)); 
     } 
    }); 
    Button Button7 = (Button) findViewById(R.id.subscribeButton7); 

    Button7.setOnClickListener(new View.OnClickListener(){ 
     public void onClick(View v){ 
      startActivity(new Intent(MainActivity.this, MainActivityweb.class)); 
     } 
    }); 
    } 
} 

Answer 1

您需要使用SharedPrefs跟踪无论是国内首家推出并重定向到另一个布局，如果它是

private static final String KEY_HAS_BEEN_LAUNCHED_BEFORE = "KEY_HAS_BEEN_LAUNCHED"; 

@Override 
protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this); 
    boolean hasBeenLaunchedBefore = prefs.getBoolean(KEY_HAS_BEEN_LAUNCHED_BEFORE , false); 
    setContentView(hasBeenLaunchedBefore ? R.layout.normal_layout 
             : R.layout.first_launch_layout); 
    if (!hasBeenLaunchedBefore) { 
     //after the first launch, record that it's been seen 
     final SharedPreferences.Editor editor = prefs.edit(); 
     editor.putBoolean(KEY_HAS_BEEN_LAUNCHED_BEFORE , true); 
     editor.apply(); 
    } 
}