android - 清除 Activity 后台堆栈

这个问题已经有了答案：
Android: Clear the back stack
36个答案
我从活动a->b->c->d->e开始。当我从d->e开始时，堆栈中应该没有活动，但是，用户可以使用d中的back按钮并转到c（不刷新活动c，就像正常的back函数一样）

最佳答案

您可以在所有要关闭的活动（a、b、c、d）中添加aBroadcastReceiver：

public class MyActivity extends Activity {
    private FinishReceiver finishReceiver;
    private static final String ACTION_FINISH =
           "com.mypackage.MyActivity.ACTION_FINISH";

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

        finishReceiver= new FinishReceiver();
        registerReceiver(finishReceiver, new IntentFilter(ACTION_FINISH));
    }

    @Override
    protected void onDestroy() {
        super.onDestroy();

        unregisterReceiver(finishReceiver);
    }

    private final class FinishReceiver extends BroadcastReceiver {
        @Override
        public void onReceive(Context context, Intent intent) {
            if (intent.getAction().equals(ACTION_FINISH))
                finish();
        }
    }
}

…然后打电话给他们…

sendBroadcast(new Intent(ACTION_FINISH));

…在活动e中，也检查this nice example。