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/*
* Copyright (C) 2010 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package android.net.sip;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.ServiceConnection;
import android.os.ConditionVariable;
import android.os.IBinder;
import android.os.IInterface;
import android.os.Looper;
import android.util.Log;
// TODO: throw away this class after moving SIP classes to framework
// This class helps to get IBinder instance of a service in a blocking call.
// The method cannot be called in app's main thread as the ServiceConnection
// callback will.
class BinderHelper<T extends IInterface> {
private Context mContext;
private IBinder mBinder;
private Class<T> mClass;
BinderHelper(Context context, Class<T> klass) {
mContext = context;
mClass = klass;
}
void startService() {
mContext.startService(new Intent(mClass.getName()));
}
void stopService() {
mContext.stopService(new Intent(mClass.getName()));
}
IBinder getBinder() {
// cannot call this method in app's main thread
if (Looper.getMainLooper().getThread() == Thread.currentThread()) {
throw new RuntimeException(
"This method cannot be called in app's main thread");
}
final ConditionVariable cv = new ConditionVariable();
cv.close();
ServiceConnection c = new ServiceConnection() {
public synchronized void onServiceConnected(
ComponentName className, IBinder binder) {
Log.v("BinderHelper", "service connected!");
mBinder = binder;
cv.open();
mContext.unbindService(this);
}
public void onServiceDisconnected(ComponentName className) {
cv.open();
mContext.unbindService(this);
}
};
if (mContext.bindService(new Intent(mClass.getName()), c, 0)) {
cv.block(4500);
}
return mBinder;
}
}
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