【移動應(yīng)用開發(fā)技術(shù)】android中怎么關(guān)閉所有的activity

var

activities:MutableList<Activity>

=

arrayListOf()fun

ActivityAdd(activity:Activity){

activities.add(activity)

}fun

ActivityFinishAll(){

for

(activity:Activity

in

activities){

if

(activity

!=

null){

activity.finish()

activities.remove(activity)

}

}

}ActivityAdd(this)

override

fun

onCreate(savedInstanceState:

Bundle?)

{

super.onCreate(savedInstanceState)

setContentView(R.layout.activity_main)

ActivityAdd(this)

...

}fun

ActivityRemove(activity:

Activity){

activities.remove(activity)

}PS：其他activity方法關(guān)閉方法四種結(jié)束當(dāng)前的activity方法//關(guān)閉當(dāng)前activity方法一

finish();

//關(guān)閉當(dāng)前界面方法二

android.os.Process.killProcess(android.os.Process.myPid());

//關(guān)閉當(dāng)前界面方法三

System.exit(0);

//關(guān)閉當(dāng)前界面方法四

this.onDestroy();Intent

intent

=

new

Intent();

intent.setClass(TableActivity.this,

FrameActivity.class);

intent.addFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP);//設(shè)置不要刷新將要跳到的界面

intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);//它可以關(guān)掉所要到的界面中間的activity

startActivity(intent);Intent

intent

=

new

Intent();

intent.setClass(TableActivity.this,

FrameActivity.class);

intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);//它可以關(guān)掉所要到的界面中間的activity

startActivity(intent);Intent

intent1

=

new

Intent(TableActivity.this,

FrameActivity.class);

intent1.addFlags(Intent.FLAG_ACTIVITY_REORDER_TO_FRONT);

startActivity(intent1);package

com.layout;

import

java.util.LinkedList;

import

java.util.List;

import

android.app.Activity;

import

android.app.Application;

/**

*

一個類

用來結(jié)束所有后臺activity

*

@author

Administrator

*

*/

public

class

SysApplication

extends

Application

{

//運用list來保存?zhèn)兠恳粋€activity是關(guān)鍵

private

List<Activity>

mList

=

new

LinkedList<Activity>();

//為了實現(xiàn)每次使用該類時不創(chuàng)建新的對象而創(chuàng)建的靜態(tài)對象

private

static

SysApplication

instance;

//構(gòu)造方法

private

SysApplication(){}

//實例化一次

public

synchronized

static

SysApplication

getInstance(){

if

(null

==

instance)

{

instance

=

new

SysApplication();

}

return

instance;

}

//

add

Activity

public

void

addActivity(Activity

activity)

{

mList.add(activity);

}

//關(guān)閉每一個list內(nèi)的activity

public

void

exit()

{

try

{

for

(Activity

activity:mList)

{

if

(activity

!=

null)

activity.finish();

}

}

catch

(Exception

e)

{

e.printStackTrace();

}

finally

{

System.exit(0);

}

}

//殺進程

public

void

onLowMemory()

{

super.onLowMe