如何在一個(gè)app中隨時(shí)退出所有活動(dòng)，不用一直按back

新建一個(gè)BaseActivity類

1. 新建一個(gè)BaseActivity類, 繼承自AppCompatActivity
2. 重寫onCreat()
3. 所有的activity繼承自自BaseActivity

   public class BaseActivity extends AppCompatActivity{
   @Override
   protected void onCreate(@Nullable Bundle savedInstanceState) {
       super.onCreate(savedInstanceState);
       Log.d("BaseActivity", getClass().getSimpleName());  // 獲取活動(dòng)名稱
   }
   

新建ActivityCollector 類作為活動(dòng)管理器

1. 通過(guò)一個(gè)List來(lái)暫存活動(dòng)
2. 提供一個(gè)addActivity()方法向List添加一個(gè)活動(dòng)
3. 提供一個(gè)removeActivity()方法來(lái)移除List中活動(dòng)
4. 提供finishAll()方法來(lái)銷毀所有List中活動(dòng)

public class ActivityCollector {
    public static List<Activity> activities = new ArrayList<>();

    public static void addActivity(Activity activity){
        activities.add(activity);
    }

    public static void removeActivity(Activity activity) {
        activities.remove(activity);
    }

    public static void finishyAll(){
        for(Activity activity:activities){  // 遍歷
            if(!activity.isFinishing()){
                activity.finish();
            }
        }
        activities.clear();
    }
}

修改BaseActivity

public class BaseActivity extends AppCompatActivity{
    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        Log.d("BaseActivity", getClass().getSimpleName());
        ActivityCollector.addActivity(this);
    }

    @Override
    protected void onDestroy() {
        super.onDestroy();
        ActivityCollector.removeActivity(this);
    }
}

活動(dòng)中添加鼠標(biāo)監(jiān)聽

protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        Log.d("ThirdAcitivity", "Task id is "+getTaskId());
        setContentView(R.layout.thrid_activity);
        Button button3 = (Button) findViewById(R.id.button_3);
        button3.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                ActivityCollector.finishyAll();
            }
        });

    }

這是我學(xué)習(xí)Android的筆記,參考書<<第一行代碼-第二版>>,感謝郭霖大神
如有不足之處,可以一起討論
附上郭霖的blog http://blog.csdn.net/guolin_blog