kotlin实现强制下线功能

2023-09-12 02:06:04 67

强制下线是需要关闭所有的活动，先创建一个类来管理所有的活动。

classActivityCollector{
//varactivities:MutableList=MutableList()
companionobject{
valactivities=ArrayList()
funaddActivity(activity:Activity){
activities.add(activity)
}
funremoveActivity(activity:Activity){
activities.remove(activity)
}
funfinsishAll(){
for(activity:Activityinactivities){
if(!activity.isFinishing){
activity.finish()
}
}
activities.clear()
}
}
}

然后建立一个所有活动的父类

openclassBaseActivity:AppCompatActivity(){
varactivityCollector=ActivityCollector()
lateinitvarreceiver:ForceOfflineReceiver
overridefunonCreate(savedInstanceState:Bundle?,persistentState:PersistableBundle?){
super.onCreate(savedInstanceState,persistentState)
ActivityCollector.addActivity(this)
//activityCollector.addActivity(this)
}
overridefunonResume(){
super.onResume()
varinetnefilter:IntentFilter=IntentFilter()
inetnefilter.addAction("FORCE_FOOLINE")
receiver=ForceOfflineReceiver()
registerReceiver(receiver,inetnefilter)
}
overridefunonPause(){
super.onPause()
if(receiver!=null){
unregisterReceiver(receiver)
//receiver=null
}
}
overridefunonDestroy(){
super.onDestroy()
ActivityCollector.removeActivity(this)
}
openclassForceOfflineReceiver:BroadcastReceiver(){
overridefunonReceive(context:Context,intent:Intent?){
varbuilder:AlertDialog.Builder=AlertDialog.Builder(context)
builder.setTitle("Warning")
builder.setMessage("youareforcedtobeoffline.pleasetrytologinagain")
builder.setCancelable(false)
builder.setPositiveButton("ok",object:DialogInterface.OnClickListener{
overridefunonClick(dialog:DialogInterface?,which:Int){
ActivityCollector.finsishAll()
varintent=Intent(context,LoginActivity::class.java)
context.startActivity(intent)
}
})
builder.show()
}
}
}

建立一个登录的布局文件

然后编写一个登录的活动，这里写了一个简单的登录，密码正确的话就进入主页面，否则给出提示。

classLoginActivity:BaseActivity(){
lateinitvaraccountEdid:EditText
lateinitvarpasswordEdit:EditText
lateinitvarlogin:Button
overridefunonCreate(savedInstanceState:Bundle?){
super.onCreate(savedInstanceState)
setContentView(R.layout.login)
accountEdid=findViewById(R.id.account)
passwordEdit=findViewById(R.id.password)
login=findViewById(R.id.login)
login.setOnClickListener(View.OnClickListener{
varaccount=accountEdid.text.toString()
varpassword=passwordEdit.text.toString()
if(account.equals("admin")&&password.equals("123")){
varintent:Intent=Intent(this,MainActivity::class.java)
startActivity(intent)
finish()
}else{
Toast.makeText(this,"账号或密码错误",Toast.LENGTH_SHORT).show()
}
})
}
}

然后修改一下mainactivity的代码

classMainActivity:BaseActivity(){
overridefunonCreate(savedInstanceState:Bundle?){
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_main)
varforceOffline:Button=findViewById(R.id.force_offline)
forceOffline.setOnClickListener(View.OnClickListener{
varintent:Intent=Intent("FORCE_FOOLINE")
sendBroadcast(intent)
})
}
}

最后对AndroidManifest.xml修改，把主活动设置更换一下。

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持毛票票。

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kotlin实现强制下线功能

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