imageView與OnTouchListener的雙重事件Android

我試圖建立一個使用android 2.1（sdk 2.1）的拖放功能。我搜索了網頁，只能使用android 4.0+。我有一個ImageView（用一些屬性和屬性包裝的類）創建並使用此代碼動態設置。imageView與OnTouchListener的雙重事件Android

public void setTileImage(Drawable tileImage) { 
    if (tileImage == null) { 
     Log.d("Tiles", "Null"); 
    } 
    this.tileImage = new ImageView(this.context); 
    this.tileImage.setImageDrawable(tileImage); 
    this.tileImage.setAdjustViewBounds(true); 
    this.tileImage.setScaleType(ImageView.ScaleType.FIT_START); 
    this.createImageMargins(); 
} 

public void createImageMargins() { 
    LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(this.imageSizeX, this.imageSizeY); 
    this.tileImage.setLayoutParams(layoutParams); 
    MarginLayoutParams marginParams = new MarginLayoutParams(this.tileImage.getLayoutParams()); 
    marginParams.setMargins(this.initialPositionX, this.initialPositionY, this.initialPositionX + imageSizeX, this.initialPositionY + this.imageSizeY); 
    RelativeLayout.LayoutParams layoutParams2 = new RelativeLayout.LayoutParams(marginParams); 
    this.tileImage.setLayoutParams(layoutParams2); 
    this.tileImage.requestLayout(); 
}

我將此ImageView添加到RelativeLayout。

RelativeLayout layout = (RelativeLayout) findViewById(R.id.playscreen); 
Tiles t1 = this.createTitle(); 
layout.addView(t1.getTileImage());

和每個ImageView的（這幾個）創建我添加OnTouchListener（唯一爲所有這些）

private static TouchListener listener = new TouchListener();; 

t1.createDragHandler(listener); 

public void createDragHandler(TouchListener listener){ 
    this.tileImage.setOnTouchListener(listener); 
}

這實現了OnTouchListener方法的類。該類使用接收到的事件的位置更改ImageView的位置（更新類後的邊距 - 方法）。

public class TouchListener implements OnTouchListener{ 

public boolean onTouch(View v, MotionEvent motionEvent) { 
    Tiles currentTile = Tiles.searchTileByView(Play.getAvailableTiles(), (ImageView)v); 
    if (motionEvent.getAction() == MotionEvent.ACTION_DOWN) { 
     return true; 
    } else if (motionEvent.getAction() == MotionEvent.ACTION_UP) { 
     Tiles t = Play.checkCollision(currentTile, currentTile.getPositionX(), currentTile.getPositionY()); 
     if(t == null){ 
      if(currentTile.getPositionX() == currentTile.getInitialPositionX() && currentTile.getPositionY() == currentTile.getInitialPositionY()){ 
       Log.d("Log","This was a click"); 
      }else{ 
       currentTile.setPositionX(currentTile.getInitialPositionX()); 
       currentTile.setPositionY(currentTile.getInitialPositionY()); 
       currentTile.createImageMargins(); 
      } 
     }else{ 
      if(t.getId() == currentTile.getId()){ 
       Play.updateScore(t.getPoints()*t.getSpecialPoints()+currentTile.getPoints()*currentTile.getSpecialPoints()); 
       t.setActive(false); 
       currentTile.setActive(false); 
       t.getTileImage().setVisibility(View.INVISIBLE); 
       currentTile.getTileImage().setVisibility(View.INVISIBLE); 
       Log.d("Log","Tile Removed"); 
      } 
     } 
     return true; 
    }else if(motionEvent.getAction() == MotionEvent.ACTION_MOVE){ 
     Log.d("Log:" + this.toString() + ":" + v,"Moved -> X: " + motionEvent.getX() + " Y: " + motionEvent.getY()); 
     currentTile.setPositionX((int) motionEvent.getX()); 
     currentTile.setPositionY((int) motionEvent.getY()); 
     currentTile.updateImageMargins(); 
     return true; 
    }else{ 
     return false; 
    } 
} 

public void updateImageMargins(){ 
    MarginLayoutParams marginParams = new MarginLayoutParams(this.tileImage.getLayoutParams()); 
    marginParams.setMargins(this.positionX, this.positionY, this.positionX + imageSizeX, this.positionY + this.imageSizeY); 
    RelativeLayout.LayoutParams layoutParams2 = new RelativeLayout.LayoutParams(marginParams); 
    this.tileImage.setLayoutParams(layoutParams2); 
}

我想，問題是我在OnTouchListener.onTouch方法中收到兩個事件。首先是使用RelativeLayout的座標（所以它從屏幕的左上角開始），另一個使用ImageView的座標（它從ImageView的左上角開始），所以當我點擊並移動時，我會收到與事件的兩個不同的座標，像這樣的活動：

[email protected]:[email protected] Moved -> X: 59.0 Y: 24.000015 
[email protected]:[email protected] Moved -> X: 100.0 Y: 148.00002

換句話說，第一行收到我點擊的位置座標在ImageView的（如果我點擊越靠近任何邊界這個值會改變），第二個是我在相關佈局中點擊的位置。所以當我移動光標時，圖像開始從一點閃爍到另一點。當我將光標向任何方向移動時，兩個值都會成比例變化。

來源

2013-04-02 candiani

您是否找到任何解決方案？我有同樣的問題 – user1512094

嘗試使用motionEvent.getRawX()和motionEvent.getRawY()而不是getX()和getY()。您可能需要進行額外的調整，以便在您的View內正確對齊。

來源

2013-04-05 03:11:46 Octahedron

imageView與OnTouchListener的雙重事件Android

回答

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