问题：
Android setOnDragListener显示错误
胡飞鹏
我正在开发一个屏幕锁定的Android应用程序。我已经使用广播接收器的屏幕。在我的应用程序中，我想使用拖放。所以，当我使用setOnDragListener时，它显示一个错误
JAVAlang.RuntimeException:在com中接收广播意图{act=init view flg=0x10}时出错。应用程序。锁屏图书馆。LockBroadcastReceiver@f22ed7d.
并且库文件引用是https://github.com/find-happiness/LockScreen
当我用滴水的时候。setOnDragListener（LockView.java文件中的new View.OnDragListener（）{中）。然后可能会发生错误。我想获取拖动项的值。（这里是我的项是btn0，拖动部分是bottomlinear）
我的密码是LockView。爪哇：
public class LockView extends FrameLayout {
public LinearLayout drop;
TextView text, sucess;
int total, failure = 0;
ImageView viewDrop;
private GestureDetector gestureDetector;
private Context mContext;
Button btnUnlock;
Button btn1, btn2, btn3, btn4, btn5, btn6, btn7, btn8, btn9, btn0, btnH, btnS;
Button buttonB;
private int CLICK_ACTION_THRESHHOLD = 200;
private float startX;
private float startY;
int nums[] = new int[4];
int position = 0;
ImageView imageView1, imageView2, imageView3, imageView4;
public LockView(Context context) {
this(context, null);
}
public LockView(Context context, AttributeSet attrs) {
this(context, attrs, 0);
}
public LockView(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
init(context);
}
private void init(final Context context) {
mContext = context;
View view = inflate(context, R.layout.activity_screen_lock, null);
gestureDetector = new GestureDetector(context, new SingleTapConfirm());
drop = (LinearLayout) findViewById(R.id.bottomlinear);
sucess = (TextView) findViewById(R.id.Sucess);
drop.setOnDragListener(new View.OnDragListener() {
@Override
public boolean onDrag(View v, DragEvent event) {
final int action = event.getAction();
switch(action) {
case DragEvent.ACTION_DRAG_STARTED:
break;
case DragEvent.ACTION_DRAG_EXITED:
break;
case DragEvent.ACTION_DRAG_ENTERED:
break;
case DragEvent.ACTION_DROP:{
failure = failure+1;
return(true);
}
case DragEvent.ACTION_DRAG_ENDED:{
total = total +1;
int suc = total - failure;
sucess.setText("Sucessful Drops :"+suc);
text.setText("Total Drops: "+total);
return(true);
}
default:
break;
}
return true;
}
});
btnUnlock = (Button) view.findViewById(R.id.unlock);
btnUnlock.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
LockHelper.getLockLayer().unlock();
}
});
btn0 = (Button) view.findViewById(R.id.btn0);
btn1 = (Button) view.findViewById(R.id.btn1);
btn2 = (Button) view.findViewById(R.id.btn2);
btn3 = (Button) view.findViewById(R.id.btn3);
btn4 = (Button) view.findViewById(R.id.btn4);
btn5 = (Button) view.findViewById(R.id.btn5);
btn6 = (Button) view.findViewById(R.id.btn6);
btn7 = (Button) view.findViewById(R.id.btn7);
btn8 = (Button) view.findViewById(R.id.btn8);
btn9 = (Button) view.findViewById(R.id.btn9);
btnH = (Button) view.findViewById(R.id.btnH);
btnS = (Button) view.findViewById(R.id.btnS);
imageView1 = (ImageView) view.findViewById(R.id.imageView);
imageView2 = (ImageView) view.findViewById(R.id.imageView2);
imageView3 = (ImageView) view.findViewById(R.id.imageView3);
imageView4 = (ImageView) view.findViewById(R.id.imageView4);
buttonB = (Button) view.findViewById(R.id.buttonB);
btn0.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
if (position > -1 && position < 4) {
nums[position] = 0;
}
setPosition(position);
}
});
btn2.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
if (position > -1 && position < 4) {
nums[position] = 2;
}
setPosition(position);
}
});
btn3.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
if (position > -1 && position < 4) {
nums[position] = 3;
}
setPosition(position);
}
});
btn4.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
if (position > -1 && position < 4) {
nums[position] = 4;
}
setPosition(position);
}
});
btn5.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
if (position > -1 && position < 4) {
nums[position] = 5;
}
setPosition(position);
}
});
btn6.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
if (position > -1 && position < 4) {
nums[position] = 6;
}
setPosition(position);
}
});
btn7.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
if (position > -1 && position < 4) {
nums[position] = 7;
}
setPosition(position);
}
});
btn8.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
if (position > -1 && position < 4) {
nums[position] = 8;
}
setPosition(position);
}
});
btn9.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
if (position > -1 && position < 4) {
nums[position] = 9;
}
setPosition(position);
}
});
btn1.setOnTouchListener(new View.OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent arg1) {
ClipData data = ClipData.newPlainText("", "");
View.DragShadowBuilder shadow = new View.DragShadowBuilder(btn1);
v.startDrag(data, shadow, v, 0);
Log.d("LOGTAG", "onTouch");
return true;
}
});
if (position == 3) {
checkSpeedDial();
} else if (position == 2) {
checkSpeedDial();
} else if (position == 1) {
checkSpeedDial();
} else if (position == 0) {
checkSpeedDial();
} else if (position == -1) {
checkSpeedDial();
}
buttonB.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
if (position == 1) {
imageView1.setImageResource(0);
position--;
Log.d("LOGTAG", "clicked1 : position =" + position);
} else if (position == 2) {
imageView2.setImageResource(0);
position--;
Log.d("LOGTAG", "clicked2 : position =" + position);
} else if (position == 3) {
imageView3.setImageResource(0);
position--;
Log.d("LOGTAG", "clicked3 : position =" + position);
} else if (position == 4) {
imageView4.setImageResource(0);
position--;
Log.d("LOGTAG", "clicked4 : position =" + position);
} else {
}
}
});
if (position > 3) {
checkPassword();
}
addView(view);
}
private void setPosition(int pos) {
if (pos == 0) {
imageView1.setImageResource(R.drawable.lock_circle);
position++;
} else if (pos == 1) {
imageView2.setImageResource(R.drawable.lock_circle);
position++;
} else if (pos == 2) {
imageView3.setImageResource(R.drawable.lock_circle);
position++;
} else if (pos == 3) {
imageView4.setImageResource(R.drawable.lock_circle);
position++;
checkPassword();
} else {
}
}
public void showLockHome() {
}
private void checkSpeedDial() {
Log.d("LOGTAG", position + " ::" + nums[0] + " 2: " + nums[1] + " 3: " + nums[2] + " 4: " + nums[3]);
}
public void checkPassword() {
Log.d("LOGTAG", "1 :" + nums[0] + " 2: " + nums[1] + " 3: " + nums[2] + " 4: " + nums[3]);
int pas[] = new int[4];
pas[0] = 1;
pas[1] = 1;
pas[2] = 1;
pas[3] = 1;
if (Arrays.equals(nums, pas)) {
LockHelper.getLockLayer().unlock();
} else {
Log.d("LOGTAG", "Wrong Password");
}
}
private class SingleTapConfirm extends GestureDetector.SimpleOnGestureListener {
@Override
public boolean onSingleTapUp(MotionEvent event) {
Log.d("LockView", "clicked1");
return true;
}
}
private boolean isAClick(float startX, float endX, float startY, float endY) {
float differenceX = Math.abs(startX - endX);
float differenceY = Math.abs(startY - endY);
if (differenceX > CLICK_ACTION_THRESHHOLD/* =5 */ || differenceY > CLICK_ACTION_THRESHHOLD) {
return false;
}
return true;
}
}
锁匠。JAVA
public enum LockHelper implements SwipeEvent {
INSTANCE;
private static Context mContext;
private final int UNLOCK = 830;
private final int UNLOCK_WITH_PASSWORD = 831;
private final int SWITCH_TO_GUEST = 345;
public static final String INIT_VIEW_FILTER = "init view";
public static final String START_SUPERVISE = "start supervise";
public static final String STOP_SUPERVISE = "stop supervise";
public static final String SHOW_SCREEN_LOCKER = "show screen locker";
private static LockView mLockView;
private static LockLayer mLockLayer;
public void initialize(Context context) {
initContextViewAndLayer(context);
loadLockView(context);
}
public static LockView getLockView() {
if (mLockView == null)
throw new NullPointerException("init first");
return mLockView;
}
public static LockLayer getLockLayer() {
if (mLockLayer == null)
throw new NullPointerException("init first");
return mLockLayer;
}
public void initLockViewInBackground(final Context context) {
if (context == null)
throw new NullPointerException("context == null, assign first");
if (mLockView == null || mLockLayer == null)
initContextViewAndLayer(context);
}
public void initContextViewAndLayer(Context context) {
if (mContext == null)
synchronized (this) {
if (mContext == null)
mContext = context;
}
//init layout view
if (mLockView == null)
synchronized (this) {
if (mLockView == null)
mLockView = new LockView(context);
}
if (mLockLayer == null)
synchronized (this) {
if (mLockLayer == null)
mLockLayer = LockLayer.getInstance(context, mLockView);
}
}
private volatile boolean mIsInitialized = false;
public void loadLockView(Context context) {
mLockView.showLockHome();
if( !mIsInitialized){
mIsInitialized = true;
}
mLockLayer.lock();
showLockLayer();
}
private Handler mHandler = new Handler(Looper.getMainLooper()) {
@Override
public void handleMessage(Message msg) {
switch (msg.what) {
case UNLOCK:
unlock();
break;
case UNLOCK_WITH_PASSWORD:
if (!(msg.obj instanceof String)) break;
String password = (String) msg.obj;
switchUserIfExistOrAlertUser(password);
break;
default:
break;
}
}
};
private void unlock() {
mLockLayer.unlock();
mContext.sendBroadcast(new Intent(LockHelper.STOP_SUPERVISE));
mContext.sendBroadcast(new Intent(CoreIntent.ACTION_SCREEN_LOCKER_UNLOCK));
}
private void switchUserIfExistOrAlertUser(String password) {
if (TextUtils.isEmpty(password)) {
wrong();
return;
}
if (!password.equals("1234")) {
wrong();
return;
}
unlockScreenAndResetPinCode();
}
private void unlockScreenAndResetPinCode() {
unlock();
}
private void wrong() { }
public static final String INTENT_KEY_WITH_SECURE = "with_secure";
@Override
public <S, T> void onSwipe(S s, T t) {
mHandler.postDelayed(new Runnable() {
@Override
public void run() {
LockHelper.INSTANCE.getLockLayer().removeLockView();
}
}, 1000);
}
private void triggerCameraWithSecure(Context context, boolean withSecure) { }
private void showLockLayer() {
mLockView.showLockHome();
mLockLayer.bringBackLockView();
}
public void vibrate(long milliseconds) {
if (mContext == null) return;
Vibrator v = (Vibrator) mContext.getSystemService(Context.VIBRATOR_SERVICE);
// Vibrate for 500 milliseconds
v.vibrate(milliseconds == 0 ? 500 : milliseconds);
}
}
锁定接收机。JAVA
final public class LockBroadcastReceiver extends BroadcastReceiver {
private static final String TAG = LockBroadcastReceiver.class.getSimpleName();
private volatile boolean bInterruptSupervisor = false;
private ScheduledThreadPoolExecutor mExecutor;
private FutureRunnable mSupervisorRunnable;
private static final int SCHEDULE_TASK_NUMBER = 3;
private PhoneStateChange mPhoneStateChangeCallback;
public void assignPhoneStateChangeCallback(PhoneStateChange phoneStateChangeCallback) {
mPhoneStateChangeCallback = phoneStateChangeCallback;
}
@Override
public void onReceive(Context context, Intent intent) {
String mAction = intent.getAction();
switch (mAction) {
case LockHelper.INIT_VIEW_FILTER:
LockHelper.INSTANCE.initLockViewInBackground(context);
break;
case Intent.ACTION_SCREEN_ON:
refreshBatteryInfo();
bringLockViewBackTopIfNot();
break;
case CoreIntent.ACTION_SCREEN_LOCKER_UNLOCK:
shutdownScheduleExecutor();
break;
case LockHelper.START_SUPERVISE:
bInterruptSupervisor = false;
supervise(context.getApplicationContext());
break;
case LockHelper.STOP_SUPERVISE:
bInterruptSupervisor = true;
break;
case LockHelper.SHOW_SCREEN_LOCKER:
//DU.sd("broadcast", "locker received");
case Intent.ACTION_SCREEN_OFF:
LockHelper.INSTANCE.initialize(context);
LockHelper.INSTANCE.getLockLayer().lock();
bInterruptSupervisor = true;
break;
case Intent.ACTION_POWER_CONNECTED:
//LockHelper.INSTANCE.getLockView().batteryChargingAnim();
break;
case Intent.ACTION_POWER_DISCONNECTED:
//LockHelper.INSTANCE.getLockView().batteryChargingAnim();
break;
case Intent.ACTION_SHUTDOWN:
break;
case "android.intent.action.PHONE_STATE":
TelephonyManager tm =
(TelephonyManager) context.getSystemService(Service.TELEPHONY_SERVICE);
switch (tm.getCallState()) {
case TelephonyManager.CALL_STATE_RINGING:
mPhoneStateChangeCallback.ringing();
Log.i(TAG, "RINGING :" + intent.getStringExtra("incoming_number"));
break;
case TelephonyManager.CALL_STATE_OFFHOOK:
mPhoneStateChangeCallback.offHook();
//DU.sd(TAG, "off hook");
break;
case TelephonyManager.CALL_STATE_IDLE:
mPhoneStateChangeCallback.idle();
Log.i(TAG, "incoming IDLE");
break;
}
break;
default:
break;
}
}
abstract class FutureRunnable implements Runnable {
private Future<?> future;
public Future<?> getFuture() {
return future;
}
public void setFuture(Future<?> future) {
this.future = future;
}
}
public void supervise(final Context context) {
initScheduleExecutor();
if (mSupervisorRunnable == null) {
mSupervisorRunnable = new FutureRunnable() {
public void run() {
if (bInterruptSupervisor) getFuture().cancel(true);
boolean cameraRunning = false;
Camera _camera = null;
try {
_camera = Camera.open();
cameraRunning = _camera == null;
} catch (Exception e) {
cameraRunning = true;
} finally {
if (_camera != null) {
_camera.release();
getFuture().cancel(true);
context.sendBroadcast(new Intent(LockHelper.SHOW_SCREEN_LOCKER));
}
}
if (!cameraRunning)
context.sendBroadcast(new Intent(LockHelper.SHOW_SCREEN_LOCKER));
}
};
}
Future<?> future = mExecutor.scheduleAtFixedRate(mSupervisorRunnable, 2000, 500, TimeUnit.MILLISECONDS);
mSupervisorRunnable.setFuture(future);
}
private void bringLockViewBackTopIfNot() {
initScheduleExecutor();
mExecutor.scheduleAtFixedRate(new Runnable() {
@Override
public void run() {
LockHelper.INSTANCE.getLockLayer().requestFullScreen();
}
}, 1000, 1000, TimeUnit.MILLISECONDS);
}
private void refreshBatteryInfo() {
initScheduleExecutor();
mExecutor.scheduleAtFixedRate(new Runnable() {
@Override
public void run() {
//LockHelper.INSTANCE.getLockView().refreshBattery();
}
}, 2, 2, TimeUnit.MINUTES);
}
private void initScheduleExecutor() {
if (mExecutor == null) {
synchronized (this) {
if (mExecutor == null)
mExecutor = new ScheduledThreadPoolExecutor(SCHEDULE_TASK_NUMBER);
}
}
}
public synchronized void shutdownScheduleExecutor() {
if (mExecutor == null) return;
mExecutor.shutdown();
mExecutor = null;
}
}
活动视图。xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:patternview="http://schemas.android.com/apk/res-auto"
android:id="@+id/activity_screen_lock"
android:layout_width="match_parent"
android:layout_height="match_parent">
<Button
android:text="1"
android:layout_height="wrap_content"
android:id="@+id/btn1"
android:layout_width="wrap_content"
android:minWidth="10dp"/>
<LinearLayout
android:id="@+id/bottomlinear"
android:gravity="center"
android:background="#00ffff"
android:orientation="vertical"
android:layout_marginTop="50dp"
android:layout_height="75dp"
android:layout_width="75dp">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/Sucess"
android:textSize="20sp" />
</LinearLayout>
</RelativeLayout>
错误显示：
E/AndroidRuntime： FATAL EXCEPTION： main流程：com.yudong.fitnewdome， PID： 8020java.lang.RuntimeExcture：错误接收广播意图{act=init view flg=0x10}在com.happiness.lockscreenlibrary.LockBroadcastReceiver@f22ed7dandroid.app.LoadedApk$ReceiverDispatcher$Args.run（LoadedApk.java:880）在android.os.Handler.handle回调（Handler.java:739）在android.os.Handler.dispatch消息（Handler.java:95）在android.os.L<--PLHD--13/>（Looper.java:135）在android.app.ActivityThread.main（ActivityThread.java:5312）在java.lang.reflect.Method.invoke（本地方法）在java. lang.反射。方法调用（方法. java： 372）在com. android. interal. os。ZygoteInit$method odAndArgsCaller. run（ZygoteInit. java： 90 1）在com. android. interal. os。ZygoteInit. main（ZygoteInit. java： 696）引起：java. lang.ClassCastExcema： com. Happy. lockScreware.LockScreenService不能强制转换到android. view。查看$OnDragListener在com.幸福. Locqeturiobook. view。LockView. init（LockView. java： 89）在com.幸福. LockView. view。锁定视图。LockView. java： 73）在com. Happy. LockView. view。锁定视图。java： 0）在com.的快乐. LockView. view.锁定视图。LockView. java： 0）在com。LockHelper. initContextViewAndLayer（LockH elper. java： 82）在com. Happy. lockScreshop. util.LockHelper. initLockViewInbackground（LockHelper. java： 68）在com. Happy. lock的屏幕库。LockBroadcastReceiver. onRecture（LockBroadcast Receiver. java： 55）在android. app.LoadedApk$ReceiverDispatcher$Args. run（LoadedApk. java： 870）在android. os.Handler. handleCallback（Handler. java： 739）在android. os.在android. os.在android. app.ActivityThread. main（ActivityThread. java： 5312）在java. lang. reff。方法调用（本机方法）在java. lang.反射。方法调用
如何解决这个问题请帮助我。
共有1个答案
方献
解决方案是使用：
drop = (LinearLayout) view.findViewById(R.id.bottomlinear);
而不是：
drop = (LinearLayout) findViewById(R.id.bottomlinear);
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