如何将数据从Activity发送回AccessibilityService？

Question

我有一个扩展AccessibilityService的类，并且在发生某些事件时会启动活动。

问题在于活动结束时，应将数据发送回“ AccessibilityService”。有谁知道如何做到这一点？

例：

public class MyAccessibilityService extends AccessibilityService {

    @Override
    public void onAccessibilityEvent(AccessibilityEvent event) {

        if (event.getEventType()==AccessibilityEvent.TYPE_VIEW_TEXT_CHANGED){
                Intent intent=new Intent(getApplicationContext(),DialogActivity.class);
                intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);

                startActivity(intent);
                // String resul=set result When Activity is closed
        }
    }

提前致谢！

Answer 1

AccesibilityService is an inherited class from Service class. So we can refer that question to this: How to have Android Service communicate with Activity

The easiest way for your question:

1）在Activity的onDestroy（）方法中调用startService（）：

@Override
    protected void onDestroy() {
        super.onDestroy();
        Intent intent = new Intent(getApplicationContext(), MyAccessibilityService.class);
        intent.putExtra("data","yourData");
        startService(intent);
    }

2）覆盖MyAccessibilityService的onStartCommand（）方法：

 @Override
    public int onStartCommand(Intent intent, int flags, int startId) {
        super.onStartCommand(intent, flags, startId);
        String data="";
        if(intent.getExtras().containsKey("data"))
            data = intent.getStringExtra("data");
        return START_STICKY;
    }