BroadcastRecevier 不想更改值

Question

当我通过广播将数据从一个 activity 传递到第二个 activity 并且当我第一次输入文本时，我遇到了这个问题 - 一切顺利，但当我回来时并输入另一个文本，然后最后一个文本保持不变。我在这里和那里祝酒词，Broadcastreceiver 似乎无法更改此字符串值。

主要活动：

public void setCall(int timeToCall){
    if (alarmManager!= null) {
        alarmManager.cancel(pendingIntent);
    }
    String name = e1.getEditableText().toString();
    //Toast.makeText(getApplicationContext(), name, Toast.LENGTH_SHORT).show();
    Intent intent = new Intent(MainActivity.this, ThisBroadcastReceiver.class);
    intent.setFlags(Intent.FLAG_INCLUDE_STOPPED_PACKAGES);
    intent.putExtra("name",name);
    pendingIntent = PendingIntent.getBroadcast(getApplicationContext(), 0, intent, 0);

    alarmManager = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
    alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP,
            SystemClock.elapsedRealtime() + timeToCall, pendingIntent);
}

广播接收器：

@Override
public void onReceive(Context context, Intent intent) {
    String name = intent.getExtras().getString("name");

    Intent i = new Intent(context, CallScreen.class);
    i.setClassName("(package)", "(classname)");
    i.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
    i.putExtra("name2", name);
    context.startActivity(i);
    Toast.makeText(context, name, Toast.LENGTH_SHORT).show();
}

第二个activity:

public class CallScreen extends Activity {

TextView incomingCall, caller;
MediaPlayer mp;
String name;

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


    Bundle extras = getIntent().getExtras();
    if (extras != null) {
        name = extras.getString("name2");
    }

    incomingCall = (TextView) findViewById(R.id.textIncomingView);
    caller = (TextView) findViewById(R.id.callerId);
    caller.setText(name);

    Uri notification = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
    mp = MediaPlayer.create(getApplicationContext(), notification);
    mp.start();
}

@Override
protected void onPause() {
    super.onPause();
    if (mp != null) {
        mp.release();
        mp = null;
    }
    finish();
}

@Override
protected void onStop() {
    super.onStop();
    if (mp != null) {
        mp.release();
        mp = null;
    }
    finish();
}

@Override
protected void onDestroy() {
    super.onDestroy();
    if (mp != null) {
        mp.release();
        mp = null;
    }
    finish();
}

Answer 1

待定 Intent 缓存在 Android 中。当你想重复使用相同 id 的待定意图时，你必须更新它：

pendingIntent = PendingIntent.getBroadcast(getApplicationContext(), 0, intent, PendingIntent.FLAG_UPDATE_CURRENT);

BroadcastRecevier 不想更改值

BroadcastRecevier don't want to change value

android

broadcastreceiver

android-broadcast