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