【移動應用開發技術】bindservice使用例子

MainActivity.java如下packagecom.example.bindservice;importcom.example.bindservice.BindService.MyBinder;importandroid.os.Bundle;importandroid.os.IBinder;importandroid.app.Activity;importandroid.content.ComponentName;importandroid.content.Context;importandroid.content.Intent;importandroid.content.ServiceConnection;importandroid.util.Log;importandroid.view.Menu;importandroid.view.View;importandroid.view.View.OnClickListener;importandroid.widget.Button;publicclassMainActivityextendsActivity{ privateButtonstartBtn; privateButtonstopBtn; privatebooleanflag; privatestaticfinalStringTAG="BindService"; @Override protectedvoidonCreate(BundlesavedInstanceState){ super.onCreate(savedInstanceState); setContentView(R.layout.main); flag=false; startBtn=(Button)this.findViewById(R.id.startBtn); stopBtn=(Button)this.findViewById(R.id.stopBtn); startBtn.setOnClickListener(listener); stopBtn.setOnClickListener(listener); } privateOnClickListenerlistener=newOnClickListener(){

@Override

publicvoidonClick(Viewv){

//TODOAuto-generatedmethodstub

switch(v.getId()){

caseR.id.startBtn:

bindService();

break;

caseR.id.stopBtn:

unBind();

break;

default:

break;

}

}

};

privatevoidbindService(){

Intentintent=newIntent(MainActivity.this,BindService.class);

bindService(intent,conn,Context.BIND_AUTO_CREATE);

}

privatevoidunBind(){

if(flag==true){

Log.i(TAG,"BindService-->unBind()");

unbindService(conn);

flag=false;

}

}

privateServiceConnectionconn=newServiceConnection(){

@Override

publicvoidonServiceDisconnected(ComponentNamename){

//TODOAuto-generatedmethodstub

}

@Override

publicvoidonServiceConnected(ComponentNamename,IBinderservice){

//TODOAuto-generatedmethodstub

MyBinderbinder=(MyBinder)service;

BindServicebindService=binder.getService();

bindService.MyMethod();

flag=true;

}

};

@Override publicbooleanonCreateOptionsMenu(Menumenu){ //Inflatethemenu;thisaddsitemstotheactionbarifitispresent. getMenuInflater().inflate(R.menu.main,menu); returntrue; } }BindService.java如下packagecom.example.bindservice;importandroid.app.Service;importandroid.content.Intent;importandroid.os.Binder;importandroid.os.IBinder;importandroid.util.Log;publicclassBindServiceextendsService{ privatestaticfinalStringTAG="BindService"; publicvoidMyMethod(){ for(inti=0;i<100;i++) { Log.i(TAG,"BindService-->MyMethod()"); }

} @Override publicIBinderonBind(Intentarg0){ //TODOAuto-generatedmethodstub returnmyBinder; } publicclassMyBinderextendsBinder{

publicBindServicegetService(){

returnBindService.this;

}

} privateMyBindermyBinder=newMyBinder();}strings.xml如下<?xmlversion="1.0"encoding="utf-8"?><resources>

<stringname="app_name">BindService</string>

<stringname="action_settings">Settings</string>

<stringname="hello_world">Helloworld!</string> <stringname="stopBtn">stopBtn</string> <stringname="startBtn">startBtn</string></resources>main.xml如下<RelativeLayoutxmlns:android="/apk/res/android"

xmlns:tools="/tools"

android:layout_width="match_parent"

android:layout_height="match_parent"

android:paddingBottom="@dimen/activity_vertical_margin"

android:paddingLeft="@dimen/activity_horizontal_margin"

android:paddingRight="@dimen/activity_horizontal_margin"

android:paddingTop="@dimen/activity_vertical_margin"

tools:context=".MainActivity">

<TextView

android:id="@+id/textView1"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="@string/hello_world"/>

<Button

android:id="@+id/startBtn"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_alignLeft="@+id/textView1"

android:layout_below="@+id/textView1"

android:layout_marginTop="18dp"

android:text="@string/startBtn"/>

<Button

android:id="@+id/stopBtn"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_alignRight="@+id/startBtn"

android:layout_below="@+id/startBtn"

android:layout_marginTop="29dp"

android:text="@string/stopBtn"/></RelativeLayout>AndroidManifest.xml如下<?xmlversion="1.0"encoding="utf-8"?><manifestxmlns:android="/apk/res/android"

package="com.example.bindservice"

android:versionCode="1"

android:versionName="1.0">

<uses-sdk

android:minSdkVersion="8"

android:targetSdkVersion="17"/>

<application

android:allowBackup="true"

android:icon="@drawable/ic_launcher"

android:label="@string/app_name"

android:theme="@style/AppTheme">

<activity

android:name="com.example.bindservice.MainActivity"

android:label="@string/app_name">

<intent-fi