如何强制调用 onServiceDisconnected()? [英] How to force the onServiceDisconnected() get called?

问题描述

在我通过调用绑定服务之后:

After I have bound a service by calling:

bindService(new Intent(IBumpAPI.class.getName()), connection, Context.BIND_AUTO_CREATE);

出于调试目的，我需要调用 onServiceDisconnected().

I need for debugging purposes to make the onServiceDisconnected() get called.

我知道当与服务的连接意外丢失时，Android 系统会调用此方法，例如当服务崩溃或被终止时，并且在客户端解除绑定时不会调用此方法.

I am aware that the Android system calls this when the connection to the service is unexpectedly lost, such as when the service has crashed or has been killed and that this is not called when the client unbinds.

所以我的问题是如何强制在需要时调用 onServiceDisconnected() 以便我可以完成测试?

So my question is how to force the onServiceDisconnected() get called whenever I want so I can complete a test?

推荐答案

您需要启动您的服务，然后绑定 Context.BIND_NOT_FOREGROUND 标志，然后停止它.这将导致调用 onServiceDisconnected.这是 MainActivity 的代码(假设您定义了 TestService 服务)，其中有两个按钮链接到调用 doBind 和 doUnbind 方法:

You need to start you service then bind with Context.BIND_NOT_FOREGROUND flag and then stop it. This will cause onServiceDisconnected to be called. Here is code (assuming that you have TestService service defined) of MainActivity with two buttons which are linked to call doBind and doUnbind methods:

package com.example.servicetest;

import android.app.Activity;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.ServiceConnection;
import android.os.Bundle;
import android.os.IBinder;
import android.util.Log;
import android.view.Menu;
import android.view.View;

public class MainActivity extends Activity {
    private static final String TAG = "MainActivity";

    private ServiceConnection connection = new ServiceConnection() {

        @Override
        public void onServiceDisconnected(ComponentName name) {
            Log.d(TAG, "Service disconnected: " + name);
        }

        @Override
        public void onServiceConnected(ComponentName name, IBinder service) {
            Log.d(TAG, "Service connected: " + name);
        }
    };

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

    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.activity_main, menu);
        return true;
    }

    public void doBind(View v) {
        Intent i = new Intent(this, TestService.class);
        startService(i);
        bindService(i, connection, Context.BIND_NOT_FOREGROUND);
    }

    public void doUnbind(View v) {
        Intent i = new Intent(this, TestService.class);
        stopService(i);
    }

}

当您单击按钮时，此代码提供以下日志:

This code provides following logs when you click on buttons:

11-27 09:21:57.326: D/MainActivity(10724): Service connected: ComponentInfo{com.example.servicetest/com.example.servicetest.TestService}
11-27 09:21:58.099: D/MainActivity(10724): Service disconnected: ComponentInfo{com.example.servicetest/com.example.servicetest.TestService}

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