Java 如何从推送通知服务获取消息并显示到消息活动

（这是我的通知）

和我的信息活动

public class Message extends Activity {

    private TextView  textViewTitle;
    private TextView  textViewContent;

    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState){
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_message);
    DisplayMetrics dm = new DisplayMetrics();
    getWindowManager().getDefaultDisplay().getMetrics(dm);

    int width = dm.widthPixels;
    int height = dm.heightPixels;

    textViewTitle = (TextView) findViewById(R.id.textViewTitle);
    textViewContent = (TextView) findViewById(R.id.textViewTitle);

    if (getIntent().getExtras() != null) {
        //init message
        String message = String.valueOf(getIntent().getExtras().get("message"));
        String title = String.valueOf(getIntent().getExtras().get("title"));
        //save the message
        textViewTitle.save(getApplicationContext() , "message" , message);
        textViewContent.save(getApplicationContext() , "title" , title);
        startActivity(new Intent(getApplicationContext() , Message.class));
    }
}

---

在您的

MyFirebaseMessagingService

中，您发送了一个包含数据的广播

Intent intent = new Intent("myAction");
intent.putExtra("title", title);
intent.putExtra("message", message);
LocalBroadcastManager.getInstance(this).sendBroadcast(intent);

在您的活动中，您将

广播接收器

注册到

意向过滤器

public class Message extends Activity {

    private MyReceiver myReceiver;

    @Override
    protected void onStart() {
        super.onStart();
        if (myReceiver == null) {
            myReceiver = new MyReceiver();
        }
        // Take care here. The same action defined in IntentFilter
        // of your MyFirebaseMessagingService must be defined here
        LocalBroadcastManager.getInstance(this)
              .registerReceiver(myReceiver, new IntentFilter("myAction"));
    }

    @Override
    protected void onStop() {
        super.onStop();
        LocalBroadcastManager.getInstance(this)
              .unregisterReceiver(myReceiver);
    }

    private class MyReceiver extends BroadcastReceiver {

        @Override
        public void onReceive(Context context, Intent intent) {
            // Here you get your data
            String title = intent.getStringExtra("title");
            String message = intent.getStringExtra("message");
        }
    }
}

---

在您的

MyFirebaseMessagingService

中，您发送了一个包含数据的广播

Intent intent = new Intent("myAction");
intent.putExtra("title", title);
intent.putExtra("message", message);
LocalBroadcastManager.getInstance(this).sendBroadcast(intent);

在您的活动中，您将

广播接收器

注册到

意向过滤器

public class Message extends Activity {

    private MyReceiver myReceiver;

    @Override
    protected void onStart() {
        super.onStart();
        if (myReceiver == null) {
            myReceiver = new MyReceiver();
        }
        // Take care here. The same action defined in IntentFilter
        // of your MyFirebaseMessagingService must be defined here
        LocalBroadcastManager.getInstance(this)
              .registerReceiver(myReceiver, new IntentFilter("myAction"));
    }

    @Override
    protected void onStop() {
        super.onStop();
        LocalBroadcastManager.getInstance(this)
              .unregisterReceiver(myReceiver);
    }

    private class MyReceiver extends BroadcastReceiver {

        @Override
        public void onReceive(Context context, Intent intent) {
            // Here you get your data
            String title = intent.getStringExtra("title");
            String message = intent.getStringExtra("message");
        }
    }
}

---

看起来不错。发货！欢迎来到堆栈溢出！我格式化了您的代码以改进其外观。在将来，您可以通过左对齐文本并将代码缩进至少4个空格来格式化代码。感谢您的帮助…我现在将尝试它…非常感谢…看起来不错。发货！欢迎来到堆栈溢出！我格式化了您的代码以改进其外观。在将来，您可以通过左对齐文本并将代码缩进至少4个空格来格式化代码。感谢您的帮助…我现在将尝试它…非常感谢。。。。