Android的service服务中开启弹窗_service启动弹窗-优快云博客

本文链接：https://blog.youkuaiyun.com/xvzhengyang/article/details/79108864

本文介绍如何在Android服务中创建并显示一个系统级别的对话框。通过设置对话框类型为TYPE_SYSTEM_ALERT，并在AndroidManifest.xml中配置相应权限，可以在不需要用户交互的情况下展示重要提示。

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/**
 * Created by lhy on 2018/1/11.
 * 1.定义一个类继承service       在dialog show方法之前添加如下代码，表示该dialog是一个系统的dialog
      dialog.getWindow().setType((WindowManager.LayoutParams.TYPE_SYSTEM_ALERT));
 * 2..在Manifest.xml文件中配置该Service；并且申请权限android.permission.SYSTEM_ALERT_WINDOW
 */

public class MyService extends Service {
    private static final String TAG = "ExampleService";

    @Nullable
    @Override
    public IBinder onBind(Intent intent) {
        Log.i(TAG, "MyService-onBind");
        return null;
    }

    @Override
    public void onCreate() {
        Log.i(TAG, "MyService-onCreate");
        super.onCreate();
    }

    /**
     * @param intent  方法过时了
     * @param startId
     */
    @Override
    public void onStart(Intent intent, int startId) {
        Log.i(TAG, "MyService-onStart");
        super.onStart(intent, startId);
    }

    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {
        AlertDialog.Builder builder = new AlertDialog.Builder(getApplicationContext());
        builder.setMessage("Hello,服务中开启弹窗.");
        builder.setNegativeButton("CANCEL", null);
        builder.setPositiveButton("OK", new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {
                // 具体操作
            }
        });
        final Dialog dialog = builder.create();
        dialog.getWindow().setType(WindowManager.LayoutParams.TYPE_SYSTEM_ALERT);
        dialog.show();
         
        return super.onStartCommand(intent, flags, startId);
    }

    @Override
    public void onDestroy() {
        Log.i(TAG, "MyService-onDestroy");
        super.onDestroy();
    }
}