这里介绍两种方法:一种把每个activity记住,然后逐一干掉;另一种思路是使用广播。
上代码:
import java.util.LinkedList;import java.util.List;import android.app.Activity;import android.app.AlertDialog;import android.app.Application;import android.content.DialogInterface;import android.content.Intent;public class SysApplication extends Application {private List<Activity> mList = new LinkedList<Activity>();private static SysApplication instance;private SysApplication() {}public synchronized static SysApplication getInstance() { if (null == instance) { instance = new SysApplication(); } return instance; }// add Activitypublic void addActivity(Activity activity) { mList.add(activity);} public void exit() { try { for (Activity activity : mList) { if (activity != null) activity.finish(); } } catch (Exception e) { e.printStackTrace(); } finally { System.exit(0); }}@Overridepublic void onLowMemory() { super.onLowMemory(); System.gc();}}在每个Activity的onCreate方法中添加类似代码:[java] public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); SysApplication.getInstance().addActivity(this); } public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); SysApplication.getInstance().addActivity(this); }在需要退出程序的时候,调用:SysApplication.getInstance().exit();SysApplication.getInstance().exit();简而言之,通过单例模式把每个Activity 的引用添加到一个全局链表中,每次退出程序调用System.exit(0)时,先调用链表中Activity 的finish方法附:此方法也可参考链接:http://maosidiaoxian.iteye.com/blog/1404725
//2.2退出整个应用难免让人困扰,曾经一度的尝试一下方式:ActivityManager manager = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE); manager.killBackgroundProcesses(package);//不行android.os.Process.killProcess(android.os.Process.myPid()); // 也不行manager.restartPackage(package); // 还是不行Intent MyIntent = new Intent(Intent.ACTION_MAIN); MyIntent.addCategory(Intent.CATEGORY_HOME); startActivity(MyIntent); finish();//这个只是退回到桌面,如果打开多个Activity关闭重新打开也会有问题,还是还是不行//看到有人说广播机制,发现是个好东东,能彻底解决这个问题,废话不说看代码:public abstract class EnterActivity extends BaseActivity { ...// 写一个广播的内部类,当收到动作时,结束activity private BroadcastReceiver broadcastReceiver = new BroadcastReceiver() { @Override public void onReceive(Context context, Intent intent) { unregisterReceiver(this); // 这句话必须要写要不会报错,不写虽然能关闭,会报一堆错 ((Activity) context).finish(); } }; @Override public void onResume() { super.onResume();// 在当前的activity中注册广播IntentFilter filter = new IntentFilter(); filter.addAction(Attribute.PAGENAME); registerReceiver(this.broadcastReceiver, filter); // 注册}public void close() { Intent intent = new Intent(); intent.setAction(Attribute.PAGENAME); // 说明动作 sendBroadcast(intent);// 该函数用于发送广播 finish(); } ... }别人写的缺了个地方(unregisterReceiver)这个必须要加,不然会出一堆错,找了个最简单的方法。
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