| /* |
| * Copyright (C) 2007 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 com.example.android.apis.app; |
| |
| import com.example.android.apis.R; |
| |
| import android.app.Activity; |
| import android.content.ComponentName; |
| import android.content.Context; |
| import android.content.Intent; |
| import android.content.ServiceConnection; |
| import android.os.Bundle; |
| import android.os.IBinder; |
| import android.view.View; |
| import android.view.View.OnClickListener; |
| import android.widget.Button; |
| import android.widget.Toast; |
| |
| |
| /** |
| * <p>Example of binding and unbinding to the {@link LocalService}. |
| * This demonstrates the implementation of a service which the client will |
| * bind to, receiving an object through which it can communicate with the service.</p> |
| */ |
| public class LocalServiceBinding extends Activity { |
| private boolean mIsBound; |
| private LocalService mBoundService; |
| |
| @Override |
| protected void onCreate(Bundle savedInstanceState) { |
| super.onCreate(savedInstanceState); |
| |
| setContentView(R.layout.local_service_binding); |
| |
| // Watch for button clicks. |
| Button button = (Button)findViewById(R.id.bind); |
| button.setOnClickListener(mBindListener); |
| button = (Button)findViewById(R.id.unbind); |
| button.setOnClickListener(mUnbindListener); |
| } |
| |
| private ServiceConnection mConnection = new ServiceConnection() { |
| public void onServiceConnected(ComponentName className, IBinder service) { |
| // This is called when the connection with the service has been |
| // established, giving us the service object we can use to |
| // interact with the service. Because we have bound to a explicit |
| // service that we know is running in our own process, we can |
| // cast its IBinder to a concrete class and directly access it. |
| mBoundService = ((LocalService.LocalBinder)service).getService(); |
| |
| // Tell the user about this for our demo. |
| Toast.makeText(LocalServiceBinding.this, R.string.local_service_connected, |
| Toast.LENGTH_SHORT).show(); |
| } |
| |
| public void onServiceDisconnected(ComponentName className) { |
| // This is called when the connection with the service has been |
| // unexpectedly disconnected -- that is, its process crashed. |
| // Because it is running in our same process, we should never |
| // see this happen. |
| mBoundService = null; |
| Toast.makeText(LocalServiceBinding.this, R.string.local_service_disconnected, |
| Toast.LENGTH_SHORT).show(); |
| } |
| }; |
| |
| private OnClickListener mBindListener = new OnClickListener() { |
| public void onClick(View v) { |
| // Establish a connection with the service. We use an explicit |
| // class name because we want a specific service implementation that |
| // we know will be running in our own process (and thus won't be |
| // supporting component replacement by other applications). |
| bindService(new Intent(LocalServiceBinding.this, |
| LocalService.class), mConnection, Context.BIND_AUTO_CREATE); |
| mIsBound = true; |
| } |
| }; |
| |
| private OnClickListener mUnbindListener = new OnClickListener() { |
| public void onClick(View v) { |
| if (mIsBound) { |
| // Detach our existing connection. |
| unbindService(mConnection); |
| mIsBound = false; |
| } |
| } |
| }; |
| } |
| |