您可以按照以下步骤操作：
- 通过单击“启动服务”按钮从活动中使用 startService() 方法启动服务。
- 通过单击“绑定服务”按钮，使用活动中的 bindService() 方法绑定服务。
- 通过单击“取消绑定服务”按钮，使用活动中的 unbindService() 方法取消绑定服务。
- 再次单击“绑定服务”按钮，然后活动调用 onRebind() 方法。
示例代码：
MyService.java
package com.example.service_lifecycle;
public class MyService extends Service {
@Override
public void onCreate() {
Toast.makeText(getApplicationContext(), "I am in on create method.", Toast.LENGTH_SHORT).show();
super.onCreate();
}
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
Toast.makeText(getApplicationContext(), "I am in on start command method. " + mStartMode, Toast.LENGTH_SHORT).show();
return super.onStartCommand(intent, flags, startId);
}
@Override
public IBinder onBind(Intent intent) {
Toast.makeText(getApplicationContext(), "I am in on bind method. " + mBinder, Toast.LENGTH_SHORT).show();
return null;
}
@Override
public boolean onUnbind(Intent intent) {
Toast.makeText(getApplicationContext(), "I am in on unbind method. " + mAllowRebind, Toast.LENGTH_SHORT).show();
return true;
}
@Override
public void onRebind(Intent intent) {
Toast.makeText(getApplicationContext(), "I am in on rebind method.", Toast.LENGTH_SHORT).show();
super.onRebind(intent);
}
@Override
public void onDestroy() {
Toast.makeText(getApplicationContext(), "I am in on destroy method.", Toast.LENGTH_SHORT).show();
super.onDestroy();
}
}
ServiceLifeCycleActivity.java
package com.example.service_lifecycle;
import com.example.androidpractice.R;
public class ServiceLifeCycleActivity extends ActionBarActivity implements OnClickListener{
private Button btnStartService;
private Button btnStopService;
private Button btnBindService;
private Button btnUnbindService;
private boolean isServiceBind = false;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_service_life_cycle);
btnStartService = (Button)findViewById(R.id.btnStartService);
btnStartService.setOnClickListener(this);
btnStopService = (Button)findViewById(R.id.btnStopService);
btnStopService.setOnClickListener(this);
btnBindService = (Button)findViewById(R.id.btnBindService);
btnBindService.setOnClickListener(this);
btnUnbindService = (Button)findViewById(R.id.btnUnbindService);
btnUnbindService.setOnClickListener(this);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.service_life_cycle, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.btnStartService:
startService(new Intent(this, MyService.class));
break;
case R.id.btnStopService:
stopService(new Intent(this, MyService.class));
break;
case R.id.btnBindService:
bindService(new Intent(this, MyService.class), mServiceConnection, Context.BIND_AUTO_CREATE);
isServiceBind = true;
break;
case R.id.btnUnbindService:
if(isServiceBind){
if(mServiceConnection != null){
unbindService(mServiceConnection);
}
isServiceBind = false;
}
else{
Toast.makeText(this, "Service is not bound.", Toast.LENGTH_SHORT).show();
}
break;
default:
break;
}
}
// Code to manage Service lifecycle.
private ServiceConnection mServiceConnection = new ServiceConnection() {
@Override
public void onServiceConnected(ComponentName comName, IBinder service) {
}
@Override
public void onServiceDisconnected(ComponentName comName) {
}
};
}
res/layout/activity_service_life_cycle.xml
<Button
android:id="@+id/btnStartService"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:text="Start Service" />
<Button
android:id="@+id/btnStopService"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/btnStartService"
android:layout_centerHorizontal="true"
android:layout_marginTop="19dp"
android:text="Stop Service" />
<Button
android:id="@+id/btnBindService"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="@+id/btnStopService"
android:layout_below="@+id/btnStopService"
android:layout_marginTop="18dp"
android:text="Bind Service" />
<Button
android:id="@+id/btnUnbindService"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="@+id/btnBindService"
android:layout_centerVertical="true"
android:text="Unbind Service" />
如果您还有任何问题，请告诉我。
谢谢。