一、销毁当前activity的方法有以下几种:
//方法1
finish();
//方法2
System.exit(0);
//方法3
this.onDestory();
//方法4
android.os.Process.killProcess(android.os.Process.myPid());
- 1
- 2
- 3
- 4
- 5
- 6
- 7
- 8
二、Intent跳转activity
1、现已经启动3个activity,OneActivity、TwoActivity、ThreeActivity;现在想从ThreeActivity跳转到OneActivity,但不是1 2 3 1,而是销毁中间的全部页面变成1;同时需要保留OneActivity的数据;
Intent intent = new Intent(this,OneActivity.class);
intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);//关掉所要到的界面中间的 activity
intent.addFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP);//设置不要刷新将要跳转的界面
startActivity(intent);
- 1
- 2
- 3
- 4
2、同上1问题类似,但是跳转的时候不需要保留OneActivity的数据
Intent intent = new Intent(this,FirstActivity.class);
intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);//关掉所要到的界面中间的activity
startActivity(intent);
- 1
- 2
- 3
3、现已经启动3个activity,OneActivity、TwoActivity、ThreeActivity;现在想从ThreeActivity跳转到OneActivity,但不是1,2,3,1,而是变成2,3,1
Intent intent = new Intent(this,FirstActivity.class);
intent.addFlags(Intent.FLAG_ACTIVITY_REORDER_TO_FRONT);
startActivity(intent);
- 1
- 2
- 3
三、退出应用程序时销毁所有的activity
1、新建activity管理类ManagerActivity
/**
* Created by glq on 2018/7/31.
* activity 管理类
*/
public class ManagerActivity {
/**
* 装载Activity的容器
* */
private List<Activity> activities= new ArrayList<>();
/**
* 声明当前;类的实例对象
* */
private static ManagerActivity managerActivity;
/**
* 单例模式 构造方法私有化
* */
private ManagerActivity(){
}
/**
* 返回当前实例对象
* */
public static ManagerActivity getInstance(){
if(managerActivity == null){
managerActivity = new ManagerActivity();
}
return managerActivity;
}
/**
* 添加Activity到容器
* */
public void addActivity(Activity activity){
activities.add(activity);
}
/**
* 移除Activity
* */
public void removeActivity(Activity activity){
if(activities.contains(activity)){
activities.remove(activity);
activity.finish();
}
}
/**
* 退出
* */
public void exit(){
for (Activity activity : activities) {
activity.finish();
}
}
}
- 1
- 2
- 3
- 4
- 5
- 6
- 7
- 8
- 9
- 10
- 11
- 12
- 13
- 14
- 15
- 16
- 17
- 18
- 19
- 20
- 21
- 22
- 23
- 24
- 25
- 26
- 27
- 28
- 29
- 30
- 31
- 32
- 33
- 34
- 35
- 36
- 37
- 38
- 39
- 40
- 41
- 42
- 43
- 44
- 45
- 46
- 47
- 48
- 49
- 50
- 51
- 52
- 53
- 54
- 55
- 56
- 57
2、新建Activity基类BaseActivity,在onCreate方法中将activity添加到ManagerActivity中
/**
* Created by glq on 2018/7/31.
* activity基类
*/
public class BaseActivity extends Activity {
@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
ManagerActivity.getInstance().addActivity(this);//添加Activity到容器
}
//这里做其他的activity公共操作
//比如跳转activity、设置状态栏等
}
- 1
- 2
- 3
- 4
- 5
- 6
- 7
- 8
- 9
- 10
- 11
- 12
- 13
- 14
3、在新建页面的时候集成BaseActivity,退出app时,所有activity就会销毁了
/**
* Created by glq on 2018/7/31.
*/
public class LoginActivity extends BaseActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_login);
}
}
- 1
- 2
- 3
- 4
- 5
- 6
- 7
- 8
- 9
- 10
- 11
PS:参考文献https://blog.csdn.net/xkc_0706/article/details/50267765
转载请注明出处:
未经允许不得转载:lxfamn » 如何正确管理Activity的跳转和Activity销毁