Androidの特定の場所に画像をドロップする

アンドロイド2.2バージョンでドラッグアンドドロップ機能を使用しているときに、別の場所に画像をドロップするたびにエラーが発生しました.......ドラッグは正常ですが、DropはIllegalArgumentExceptionエラーを返します。Androidの特定の場所に画像をドロップする

エラー・スタック：

01-16 20:27:46.029: E/AndroidRuntime(3931): FATAL EXCEPTION: main 
01-16 20:27:46.029: E/AndroidRuntime(3931): java.lang.IllegalArgumentException: Given view not a child of [email protected] 
01-16 20:27:46.029: E/AndroidRuntime(3931):  at android.view.ViewGroup.updateViewLayout(ViewGroup.java:1876) 
01-16 20:27:46.029: E/AndroidRuntime(3931):  at com.SpeachTreat.common.DragLayer.onDrop(DragLayer.java:90) 
01-16 20:27:46.029: E/AndroidRuntime(3931):  at com.SpeachTreat.common.DragController.drop(DragController.java:446) 
01-16 20:27:46.029: E/AndroidRuntime(3931):  at com.SpeachTreat.common.DragController.onTouchEvent(DragController.java:424) 
01-16 20:27:46.029: E/AndroidRuntime(3931):  at com.SpeachTreat.common.DragLayer.onTouchEvent(DragLayer.java:63) 
01-16 20:27:46.029: E/AndroidRuntime(3931):  at android.view.View.dispatchTouchEvent(View.java:3766) 
01-16 20:27:46.029: E/AndroidRuntime(3931):  at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:897) 
01-16 20:27:46.029: E/AndroidRuntime(3931):  at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:936) 
01-16 20:27:46.029: E/AndroidRuntime(3931):  at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:936) 
01-16 20:27:46.029: E/AndroidRuntime(3931):  at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:936) 
01-16 20:27:46.029: E/AndroidRuntime(3931):  at com.android.internal.policy.impl.PhoneWindow$DecorView.superDispatchTouchEvent(PhoneWindow.java:1676) 
01-16 20:27:46.029: E/AndroidRuntime(3931):  at com.android.internal.policy.impl.PhoneWindow.superDispatchTouchEvent(PhoneWindow.java:1112) 
01-16 20:27:46.029: E/AndroidRuntime(3931):  at android.app.Activity.dispatchTouchEvent(Activity.java:2086) 
01-16 20:27:46.029: E/AndroidRuntime(3931):  at com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchTouchEvent(PhoneWindow.java:1660) 
01-16 20:27:46.029: E/AndroidRuntime(3931):  at android.view.ViewRoot.handleMessage(ViewRoot.java:1785) 
01-16 20:27:46.029: E/AndroidRuntime(3931):  at android.os.Handler.dispatchMessage(Handler.java:99) 
01-16 20:27:46.029: E/AndroidRuntime(3931):  at android.os.Looper.loop(Looper.java:123) 
01-16 20:27:46.029: E/AndroidRuntime(3931):  at android.app.ActivityThread.main(ActivityThread.java:4627) 
01-16 20:27:46.029: E/AndroidRuntime(3931):  at java.lang.reflect.Method.invokeNative(Native Method) 
01-16 20:27:46.029: E/AndroidRuntime(3931):  at java.lang.reflect.Method.invoke(Method.java:521) 
01-16 20:27:46.029: E/AndroidRuntime(3931):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:860) 
01-16 20:27:46.029: E/AndroidRuntime(3931):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618) 
01-16 20:27:46.029: E/AndroidRuntime(3931):  at dalvik.system.NativeStart.main(Native Method)

のXml：

<?xml version="1.0" encoding="utf-8"?> 
<com.SpeachTreat.common.DragLayer 
    xmlns:android="http://schemas.android.com/apk/res/android" 
    xmlns:launcher="http://schemas.android.com/apk/res/com.android.launcher" 
android:background="#ffffff" 
    android:id="@+id/drag_layer" 
    android:layout_width="fill_parent" 
    android:layout_height="fill_parent"> 


<LinearLayout 
    android:layout_width="fill_parent" 
    android:layout_height="wrap_content" 
    android:background="#ffffff" 
    android:layout_centerVertical="true" 
    android:orientation="vertical" > 

    <RelativeLayout 
     android:id="@+id/relativeLayout1" 
     android:layout_width="match_parent" 
     android:layout_height="wrap_content" > 

     <LinearLayout 
      android:id="@+id/linearLayout1" 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" 
      android:layout_alignParentTop="true" 
      android:layout_centerHorizontal="true" android:background="@drawable/header_back" android:orientation="vertical"> 

      <ImageView 
       android:id="@+id/imageView1" 
       android:layout_width="wrap_content" 
       android:layout_height="wrap_content" 
       android:src="@drawable/logo" /> 

      <ImageView 
       android:id="@+id/imageView2" 
       android:layout_width="wrap_content" 
       android:layout_height="wrap_content" 
       android:src="@drawable/header_text" /> 

     </LinearLayout> 

    </RelativeLayout> 

    <RelativeLayout 
     android:id="@+id/relativeLayout2" 
     android:layout_width="match_parent" 
     android:layout_height="wrap_content" android:layout_marginTop="10dip"> 

     <FrameLayout 
      android:id="@+id/frameLayout1" 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" 
      android:layout_alignParentTop="true" 
      android:layout_centerHorizontal="true" android:background="@drawable/start_playing_with_outline4"> 

      <ImageView 
       android:id="@+id/img_Treat_Character" 
       android:layout_width="wrap_content" 
       android:layout_height="wrap_content" 
       android:src="@drawable/cute_animal_big3" android:layout_gravity="center_vertical|center_horizontal"/> 

     </FrameLayout> 

    </RelativeLayout> 

    <RelativeLayout 
     android:id="@+id/relativeLayout3" 
     android:layout_width="match_parent" 
     android:layout_height="wrap_content" android:layout_marginTop="10dip"> 

     <LinearLayout 
      android:id="@+id/linearLayout2" 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" 
      android:layout_alignParentTop="true" 
      android:layout_centerHorizontal="true" 
      android:orientation="vertical" android:background="@drawable/select_your_treat_with_outline"> 

      <LinearLayout 
       android:id="@+id/linearLayout4" 
       android:layout_width="match_parent" 
       android:layout_height="wrap_content" android:layout_marginTop="10dip"> 

       <ImageView 
        android:id="@+id/img_treat1" 
        android:layout_width="wrap_content" 
        android:layout_height="wrap_content" 
        android:src="@drawable/treat1" android:layout_marginLeft="30dip"/> 
       <ImageView 
        android:id="@+id/img_treat2" 
        android:layout_width="wrap_content" 
        android:layout_height="wrap_content" 
        android:src="@drawable/treat1" android:layout_marginLeft="10dip"/> 
       <ImageView 
        android:id="@+id/img_treat3" 
        android:layout_width="wrap_content" 
        android:layout_height="wrap_content" 
        android:src="@drawable/treat1" android:layout_marginLeft="10dip"/> 
       <ImageView 
        android:id="@+id/img_treat4" 
        android:layout_width="wrap_content" 
        android:layout_height="wrap_content" 
        android:src="@drawable/treat1" android:layout_marginLeft="10dip"/> 
       <ImageView 
        android:id="@+id/img_treat5" 
        android:layout_width="wrap_content" 
        android:layout_height="wrap_content" 
        android:src="@drawable/treat1" android:layout_marginLeft="10dip"/> 

      </LinearLayout> 
      <LinearLayout 
       android:id="@+id/linearLayout5" 
       android:layout_width="match_parent" 
       android:layout_height="wrap_content" android:layout_marginTop="10dip"> 

       <ImageView 
        android:id="@+id/img_treat6" 
        android:layout_width="wrap_content" 
        android:layout_height="wrap_content" 
        android:src="@drawable/treat1" android:layout_marginLeft="30dip"/> 
       <ImageView 
        android:id="@+id/img_treat7" 
        android:layout_width="wrap_content" 
        android:layout_height="wrap_content" 
        android:src="@drawable/treat1" android:layout_marginLeft="10dip"/> 
       <ImageView 
        android:id="@+id/img_treat8" 
        android:layout_width="wrap_content" 
        android:layout_height="wrap_content" 
        android:src="@drawable/treat1" android:layout_marginLeft="10dip"/> 
       <ImageView 
        android:id="@+id/img_treat9" 
        android:layout_width="wrap_content" 
        android:layout_height="wrap_content" 
        android:src="@drawable/treat1" android:layout_marginLeft="10dip"/> 
       <ImageView 
        android:id="@+id/img_treat10" 
        android:layout_width="wrap_content" 
        android:layout_height="wrap_content" 
        android:src="@drawable/treat1" android:layout_marginLeft="10dip"/> 

      </LinearLayout> 

     </LinearLayout> 

    </RelativeLayout> 
<RelativeLayout 
     android:id="@+id/relativeLayout4" 
     android:layout_width="match_parent" 
     android:layout_height="wrap_content" android:layout_marginTop="10dip"> 

    <LinearLayout 
     android:id="@+id/linearLayout3" 
     android:layout_width="wrap_content" 
     android:layout_alignParentTop="true" 
      android:layout_centerHorizontal="true" 
     android:layout_height="wrap_content" android:layout_marginTop="10dip"> 

     <ImageView 
      android:id="@+id/imageView3" 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" 
      android:src="@drawable/selectanewcharacter_button" /> 

     <ImageView 
      android:id="@+id/imageView4" 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" 
      android:src="@drawable/end_game_button" android:layout_marginTop="10dip"/> 


     <ImageView 
      android:id="@+id/imageView5" 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" 
      android:src="@drawable/green_button_with_shadow" android:layout_marginTop="20dip" android:layout_marginLeft="10dip"/> 

     <ImageView 
      android:id="@+id/imageView6" 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" 
      android:src="@drawable/red_button_with_shadow" android:layout_marginTop="20dip" android:layout_marginLeft="10dip"/> 

    </LinearLayout> 
</RelativeLayout> 
</LinearLayout> 
</com.SpeachTreat.common.DragLayer>

DragLayer：

package com.blahti.example.drag; 

import android.content.Context; 
import android.graphics.Rect; 
import android.util.AttributeSet; 
import android.view.MotionEvent; 
import android.view.KeyEvent; 
import android.view.View; 
import android.widget.Toast; 

public class DragLayer extends MyAbsoluteLayout 
    implements DragSource, DropTarget 
{ 
    DragController mDragController; 

    /** 
    * Used to create a new DragLayer from XML. 
    * 
    * @param context The application's context. 
    * @param attrs The attribtues set containing the Workspace's customization values. 
    */ 
    public DragLayer (Context context, AttributeSet attrs) { 
     super(context, attrs); 
    } 

    public void setDragController(DragController controller) { 
     mDragController = controller; 
    } 

    @Override 
    public boolean dispatchKeyEvent(KeyEvent event) { 
     return mDragController.dispatchKeyEvent(event) || super.dispatchKeyEvent(event); 
    } 

    @Override 
    public boolean onInterceptTouchEvent(MotionEvent ev) { 
     return mDragController.onInterceptTouchEvent(ev); 
    } 

    @Override 
    public boolean onTouchEvent(MotionEvent ev) { 
     return mDragController.onTouchEvent(ev); 
    } 

    @Override 
    public boolean dispatchUnhandledMove(View focused, int direction) { 
     return mDragController.dispatchUnhandledMove(focused, direction); 
    } 

/** 
*/ 
// DragSource interface methods 

/** 
* setDragController 
* 
*/ 

/* setDragController is already defined. See above. */ 

/** 
* onDropCompleted 
* 
*/ 

public void onDropCompleted (View target, boolean success) 
{ 
    toast ("DragLayer2.onDropCompleted: " + target.getId() + " Check that the view moved."); 
} 

public void onDrop(DragSource source, int x, int y, int xOffset, int yOffset, 
     DragView dragView, Object dragInfo) 
{ 
    View v = (View) dragInfo; 
    toast ("DragLayer2.onDrop accepts view: " + v.getId() 
      + "x, y, xO, yO :" + new Integer (x) + ", " + new Integer (y) + ", " 
      + new Integer (xOffset) + ", " + new Integer (yOffset)); 

    int w = v.getWidth(); 
    int h = v.getHeight(); 
    int left = x - xOffset; 
    int top = y - yOffset; 
    DragLayer.LayoutParams lp = new DragLayer.LayoutParams (w, h, left, top); 
    this.updateViewLayout(v, lp); 
} 

public void onDragEnter(DragSource source, int x, int y, int xOffset, int yOffset, 
     DragView dragView, Object dragInfo) 
{ 
} 

public void onDragOver(DragSource source, int x, int y, int xOffset, int yOffset, 
     DragView dragView, Object dragInfo) 
{ 
} 

public void onDragExit(DragSource source, int x, int y, int xOffset, int yOffset, 
     DragView dragView, Object dragInfo) 
{ 
} 


public boolean acceptDrop(DragSource source, int x, int y, int xOffset, int yOffset, 
     DragView dragView, Object dragInfo) 
{ 
    return true; 
} 


public Rect estimateDropLocation(DragSource source, int x, int y, int xOffset, int yOffset, 
      DragView dragView, Object dragInfo, Rect recycle) 
{ 
    return null; 
} 

public void toast (String msg) 
{ 
    if (!DragActivity.Debugging) return; 
    Toast.makeText (getContext(), msg, Toast.LENGTH_SHORT).show(); 
} // end toast 


} // end class

出典

2012-01-16 Sanat Pandey

使用以下のリンクI tはUi要素のドラッグ＆ドロップの素晴らしいチュートリアルを持っています

http://www.edumobile.org/android/android-beginner-tutorials/drag-and-drop-ui-element/

出典

2012-01-16 10:17:40 bindal

Androidの特定の場所に画像をドロップする

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