android退出程序

BaseActivity

public class BaseAcitivty extends Activity {
    
    @Override
    protected void onCreate(Bundle savedInstanceState){
        super.onCreate(savedInstanceState);
        //无标题
        requestWindowFeature(Window.FEATURE_NO_TITLE); 
        //全屏
        getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
                WindowManager.LayoutParams.FLAG_FULLSCREEN); 
              
        
        //添加Activity到堆栈
        BaseApplication.getInstance().addActivity(this);
    }
 
    @Override
    protected void onDestroy(){
        super.onDestroy();
        //结束Activity&从栈中移除该Activity
        BaseApplication.getInstance().finishActivity(this);
    }
    
    
    //    HOME
    @Override   
    public void onAttachedToWindow() {   
        this.getWindow().setType(WindowManager.LayoutParams.TYPE_KEYGUARD);    
        super.onAttachedToWindow();   
    } 
    
     // 下拉
    @Override
    public void onWindowFocusChanged(boolean hasFocus) {  
        super.onWindowFocusChanged(hasFocus);  
        try {  
            Object service = getSystemService("statusbar");  
            Class<?> statusbarManager = Class.forName("android.app.StatusBarManager");  
            Method test = statusbarManager.getMethod("collapse");  
            test.invoke(service);  
        } catch (Exception ex) {  
            ex.printStackTrace();  
        }  
    } 
    
}

BaseApplication

public class BaseApplication extends Application {
    
    private static Stack<Activity> activityStack;
    private static BaseApplication singleton;
    @Override
    public void onCreate()
    {
        super.onCreate();
        singleton=this;
    }

    public static BaseApplication getInstance() {
        return singleton;
    }

    /**
     * add Activity 添加Activity到栈
     */
    public void addActivity(Activity activity){
        if(activityStack ==null){
            activityStack =new Stack<Activity>();
        }
        activityStack.add(activity);
    }
    /**
     * get current Activity 获取当前Activity（栈中最后一个压入的）
     */
    public Activity currentActivity() {
        Activity activity = activityStack.lastElement();
        return activity;
    }
    /**
     * 结束当前Activity（栈中最后一个压入的）
     */
    public void finishActivity() {
        Activity activity = activityStack.lastElement();
        finishActivity(activity);
    }

    /**
     * 结束指定的Activity
     */
    public void finishActivity(Activity activity) {
        if (activity != null) {
            activityStack.remove(activity);
            activity.finish();
            activity = null;
        }
    }

    /**
     * 结束指定类名的Activity
     */
    public void finishActivity(Class<?> cls) {
        for (Activity activity : activityStack) {
            if (activity.getClass().equals(cls)) {
                finishActivity(activity);
            }
        }
    }

    /**
     * 结束所有Activity
     */
    public void finishAllActivity() {
        for (int i = 0, size = activityStack.size(); i < size; i++) {
            if (null != activityStack.get(i)) {
                activityStack.get(i).finish();
            }
        }
        activityStack.clear();
    }

    /**
     * 退出应用程序
     */
    public void AppExit() {
        try {
            finishAllActivity();
        } catch (Exception e) {
        }
    }

}

AndroidMainifest.xml

<application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme"
        android:name="com.andrid.demo.BaseApplication">

        ....

</appliction>

MainAcitvity

public void exitApp{
      BaseApplication.getInstance().AppExit();
}