Question

Service怎么关闭启动自己的Activity

Answer 1

方法一： public class mService extends Service {
//保存在service中的Activity对象 private static mActivity m;
//启动服务 static void startservice(Context c){
m=(mActivity)c;
Intent iService=new Intent(c,mService.class);
iService.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
c.startActivity(iService);}//关闭服务 static void stopservice(Context c){
Intent iService=new Intent(c,mService.class);
iService.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
c.stopService(iService);}……//在mService中关闭mActivity m.finish(); }
public class mActivity extends Activity {
// private MediaPlayer mMPlayer;@Overrideprotected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);……//启动mService mService.startservice(mActivity.this); ……
//停止mService mService.stopservice(mActivity.this); }}方法二： 主要包括3部分
1. 定义application类，这个类可以保存获取activity实例，记得manifest中加入android:name=".MyApp"
public class MyApp extends Application{
private MyServiceActivity myActivity;
public void setInstance(MyServiceActivity instance){
myActivity = instance;}public MyServiceActivity getInstance(){
return myActivity;}}
2. 在activity中保存实例 public class MyServiceActivity extends Activity {@Overridepublic void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
((MyApp)getApplication()).setInstance(this); ……}}
3. 在service中取回实例 public class MyService extends Service {
MyServiceActivity myActivity;@Overridepublic void onCreate() {
super.onCreate();setForeground(true);