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android 完全退出实现

实现方法是在application中定义一个集合存储所有的Activity对象,在Activity创建时添加进集合中,在程序退出时,finish掉所有的Activity即可。

步骤如下:

1.自定义Application,MyApplication.java代码如下:

 1 public class MyApplication extends Application{ 2     private static ArrayList<Activity> activityList; 3     private static MyApplication sInstance; 4     @Override 5     public void onCreate() { 6         super.onCreate(); 7         activityList=new ArrayList<Activity>(); 8         sInstance=this; 9     }10     public static MyApplication getInstance(){11         return sInstance;12     }13     public void addActivity(Activity activity) {14         activityList.add(activity);15     }16     public void exit(){17         for (Activity activity : activityList) {18             activity.finish();19         }20         System.exit(0);21     }22 }

 

2.定义Activity基类BaseActivity,所有的Activity继承BaseActivity,Activity创建时添加Activity对象到Application中的集合中,BaseAcivity.java代码如下:

1 public class BaseActivity extends Activity{2     @Override3     protected void onCreate(Bundle savedInstanceState) {4         super.onCreate(savedInstanceState);5         MyApplication.getInstance().addActivity(this);6     }7 }

 

3.在程序退出是调用MyApplication中exit()方法即可完全退出,代码如下:

MyApplication.getInstance().exit();