Android 在智能手机上打开首次启动的应用程序的活动

晚上好，我将首次在智能手机上启动一个活动主布局应用程序，我该怎么办？ 这是我的主要活动。。。当我的apo启动时，您可以查看我的活动主站以选择从firebase接收的通知，当我设置通知时，应用程序会将您重定向到另一个活动主站Web当我放置网络视图时，我只想第一次看到第一个活动主站布局

公共类MainActivity扩展了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));
        }
    });
    }
}

---

您需要使用SharedPrefs跟踪它是否是第一次启动，如果是，则重定向到其他布局

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();
    }
}

---

非常不清楚你在问什么。为什么？这是一个简单的问题，只有当应用程序第一次在智能手机上启动时，我才需要打开一个布局活动。为什么？因为这个问题看起来像是由一个糟糕的翻译应用程序处理的，没有意义。我不认为。因为我写下了我需要的内容，并且收到了回复。你能回答吗你现在检查我的问题吗？他为你写了整个代码片段，你还想要什么？复制并粘贴它。这不是功能