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问题描述
我有一个服务
,我想结合我的主要活动
,但是我收到一个
java.lang.ClassCastException:android.os.BinderProxy不能转换为com.walintukai.rubix.ConnectionService $ LocalBinder
我宣布我的清单服务。为什么会出现这种情况?
舱单申报
<服务机器人:名字=。ConnectionService/>
服务(简体code)
公共类ConnectionService延伸服务{静态最后弦乐TAG = ConnectionService.class.getName();私人BluetoothAdapter mBtAdapter = NULL;
公共BluetoothGatt mBluetoothGatt = NULL;
私人ConnectionServiceEventListener mIRedBearServiceEventListener;
HashMap的<弦乐,BluetoothDevice类> mDevices = NULL;
私人BluetoothGattCharacteristic txCharc = NULL;
私人最终的IBinder mBinder =新LocalBinder();@覆盖
公众的IBinder onBind(意向意图){
返回mBinder;
}公共类LocalBinder扩展粘结剂{
公共ConnectionService的getService(){
返回ConnectionService.this;
}
}@覆盖
公共无效的onCreate(){
super.onCreate(); 最后BluetoothManager bluetoothManager =(BluetoothManager)getSystemService(Context.BLUETOOTH_SERVICE);
mBtAdapter = bluetoothManager.getAdapter(); 如果(mBtAdapter == NULL)
返回; 如果(mDevices == NULL)
mDevices =新的HashMap<弦乐,BluetoothDevice类>();
}@覆盖
公共无效的onDestroy(){
如果(mBluetoothGatt == NULL)
返回; mBluetoothGatt.close();
mBluetoothGatt = NULL; super.onDestroy();
}
}
主要活动
公共类MainActivity扩展ActionBarActivity {私人ConnectionService服务;ServiceConnection连接=新ServiceConnection(){ @覆盖
公共无效onServiceDisconnected(组件名名){
Log.i(ConnectionService,断开连接);
服务= NULL;
} @覆盖
公共无效onServiceConnected(组件名名称,服务的IBinder){
LocalBinder粘结剂=(LocalBinder)服务;
服务=(的IBinder)binder.getService(); 如果(服务!= NULL){
Log.i(RedBearService,连接); }
}
};@覆盖
保护无效的onCreate(捆绑savedInstanceState){
super.onCreate(savedInstanceState);
的setContentView(R.layout.activity_main);
如果(savedInstanceState == NULL){
。getSupportFragmentManager()调用BeginTransaction()加(R.id.container,ViewPagerFragment.newInstance())提交()。
}
}@覆盖
公共无效调用onStart(){
super.onStart();
startService();
}@覆盖
公共无效的onStop(){
super.onStop();
stopService();
}私人无效startService(){
意向书的服务=新意图(这一点,ConnectionService.class);
bindService(服务,连接Context.BIND_AUTO_CREATE);
}私人无效stopService(){
unbindService(连接);
}
}
堆栈跟踪
07-30 17:19:39.065:E / AndroidRuntime(20891):java.lang.ClassCastException:android.os.BinderProxy不能转换为com.walintukai.rubix.ConnectionService $ LocalBinder
07-30 17:19:39.065:E / AndroidRuntime(20891):在com.walintukai.rubix.MainActivity $ 1.onServiceConnected(MainActivity.java:58)
07-30 17:19:39.065:E / AndroidRuntime(20891):在android.app.LoadedApk $ ServiceDispatcher.doConnected(LoadedApk.java:1110)
07-30 17:19:39.065:E / AndroidRuntime(20891):在android.app.LoadedApk $ ServiceDispatcher $ RunConnection.run(LoadedApk.java:1127)
07-30 17:19:39.065:E / AndroidRuntime(20891):在android.os.Handler.handleCallback(Handler.java:733)
07-30 17:19:39.065:E / AndroidRuntime(20891):在android.os.Handler.dispatchMessage(Handler.java:95)
07-30 17:19:39.065:E / AndroidRuntime(20891):在android.os.Looper.loop(Looper.java:136)
07-30 17:19:39.065:E / AndroidRuntime(20891):在android.app.ActivityThread.main(ActivityThread.java:5050)
07-30 17:19:39.065:E / AndroidRuntime(20891):在java.lang.reflect.Method.invokeNative(本机方法)
07-30 17:19:39.065:E / AndroidRuntime(20891):在java.lang.reflect.Method.invoke(Method.java:515)
07-30 17:19:39.065:E / AndroidRuntime(20891):在com.android.internal.os.ZygoteInit $ MethodAndArgsCaller.run(ZygoteInit.java:789)
07-30 17:19:39.065:E / AndroidRuntime(20891):在com.android.internal.os.ZygoteInit.main(ZygoteInit.java:605)
07-30 17:19:39.065:E / AndroidRuntime(20891):在dalvik.system.NativeStart.main(本机方法)
解决方案
您已经得到它翻转:
公共无效onServiceConnected(组件名名称,服务的IBinder){
LocalBinder粘结剂=(LocalBinder)服务;
服务=(的IBinder)binder.getService();
...
}
应该是:
公共无效onServiceConnected(组件名名称,服务的IBinder){
LocalBinder粘结剂=(LocalBinder)服务;
MainActivity.this.service =(ConnectionService)binder.getService();
...
}
I have a Service
that I am trying to bind to my main Activity
, but I am receiving a
java.lang.ClassCastException: android.os.BinderProxy cannot be cast to com.walintukai.rubix.ConnectionService$LocalBinder.
I have declared the service in my manifest. Why is this happening?
Manifest Declaration
<service android:name=".ConnectionService" />
Service (simplified code)
public class ConnectionService extends Service {
static final String TAG = ConnectionService.class.getName();
private BluetoothAdapter mBtAdapter = null;
public BluetoothGatt mBluetoothGatt = null;
private ConnectionServiceEventListener mIRedBearServiceEventListener;
HashMap<String, BluetoothDevice> mDevices = null;
private BluetoothGattCharacteristic txCharc = null;
private final IBinder mBinder = new LocalBinder();
@Override
public IBinder onBind(Intent intent) {
return mBinder;
}
public class LocalBinder extends Binder {
public ConnectionService getService() {
return ConnectionService.this;
}
}
@Override
public void onCreate() {
super.onCreate();
final BluetoothManager bluetoothManager = (BluetoothManager) getSystemService(Context.BLUETOOTH_SERVICE);
mBtAdapter = bluetoothManager.getAdapter();
if (mBtAdapter == null)
return;
if (mDevices == null)
mDevices = new HashMap<String, BluetoothDevice>();
}
@Override
public void onDestroy() {
if (mBluetoothGatt == null)
return;
mBluetoothGatt.close();
mBluetoothGatt = null;
super.onDestroy();
}
}
Main Activity
public class MainActivity extends ActionBarActivity {
private ConnectionService service;
ServiceConnection connection = new ServiceConnection() {
@Override
public void onServiceDisconnected(ComponentName name) {
Log.i("ConnectionService", "Disconnected");
service = null;
}
@Override
public void onServiceConnected(ComponentName name, IBinder service) {
LocalBinder binder = (LocalBinder) service;
service = (IBinder) binder.getService();
if (service != null) {
Log.i("RedBearService", "Connected");
}
}
};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
if (savedInstanceState == null) {
getSupportFragmentManager().beginTransaction().add(R.id.container, ViewPagerFragment.newInstance()).commit();
}
}
@Override
public void onStart() {
super.onStart();
startService();
}
@Override
public void onStop() {
super.onStop();
stopService();
}
private void startService() {
Intent service = new Intent(this, ConnectionService.class);
bindService(service, connection, Context.BIND_AUTO_CREATE);
}
private void stopService() {
unbindService(connection);
}
}
Stacktrace
07-30 17:19:39.065: E/AndroidRuntime(20891): java.lang.ClassCastException: android.os.BinderProxy cannot be cast to com.walintukai.rubix.ConnectionService$LocalBinder
07-30 17:19:39.065: E/AndroidRuntime(20891): at com.walintukai.rubix.MainActivity$1.onServiceConnected(MainActivity.java:58)
07-30 17:19:39.065: E/AndroidRuntime(20891): at android.app.LoadedApk$ServiceDispatcher.doConnected(LoadedApk.java:1110)
07-30 17:19:39.065: E/AndroidRuntime(20891): at android.app.LoadedApk$ServiceDispatcher$RunConnection.run(LoadedApk.java:1127)
07-30 17:19:39.065: E/AndroidRuntime(20891): at android.os.Handler.handleCallback(Handler.java:733)
07-30 17:19:39.065: E/AndroidRuntime(20891): at android.os.Handler.dispatchMessage(Handler.java:95)
07-30 17:19:39.065: E/AndroidRuntime(20891): at android.os.Looper.loop(Looper.java:136)
07-30 17:19:39.065: E/AndroidRuntime(20891): at android.app.ActivityThread.main(ActivityThread.java:5050)
07-30 17:19:39.065: E/AndroidRuntime(20891): at java.lang.reflect.Method.invokeNative(Native Method)
07-30 17:19:39.065: E/AndroidRuntime(20891): at java.lang.reflect.Method.invoke(Method.java:515)
07-30 17:19:39.065: E/AndroidRuntime(20891): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:789)
07-30 17:19:39.065: E/AndroidRuntime(20891): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:605)
07-30 17:19:39.065: E/AndroidRuntime(20891): at dalvik.system.NativeStart.main(Native Method)
解决方案
You've got it flipped:
public void onServiceConnected(ComponentName name, IBinder service) {
LocalBinder binder = (LocalBinder) service;
service = (IBinder) binder.getService();
...
}
should be:
public void onServiceConnected(ComponentName name, IBinder service) {
LocalBinder binder = (LocalBinder) service;
MainActivity.this.service = (ConnectionService) binder.getService();
...
}
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