如何使查看對點擊產生反應

Question

我已創建了繼承View的自定義窗口小部件。

<com.test.www.view.ElementView 
    android:id="@+id/surface1" 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:focusable="true" 
    android:focusableInTouchMode="true" 
    android:layout_weight="1" 

/

>

和

public class ElementView extends View { 
    private final int width=100; 
    private final int height=100; 
    private Paint paint=null; 
    private Canvas canvas=null; 

    public ElementView(Context context) { 
     super(context); 
     paint = new Paint(); 
    } 

    public ElementView(Context context, AttributeSet attr) { 
     super(context, attr); 
     paint = new Paint(); 
    } 


    public ElementView(Context context, AttributeSet attr, int defaultStyles) { 
     super(context, attr, defaultStyles); 
     paint = new Paint(); 
    } 

    @Override 
    protected void onMeasure(int widthSpec, int heightSpec) { 
     int measuredWidth = MeasureSpec.getSize(widthSpec); 
     int measuredHeight = MeasureSpec.getSize(heightSpec); 
     setMeasuredDimension(this.width,this.height); 

    } 

    @Override 
    protected void onDraw(Canvas canvas) { 
     this.canvas=canvas; 
     // get the size of your control based on last call to onMeasure 
     int height = getMeasuredHeight(); 
     int width = getMeasuredWidth(); 

     // Now create a paint brush to draw your widget 

     paint.setColor(Color.GREEN); 

     //define border 
     this.canvas.drawLine(0, 0, 0, 99, paint); 
     this.canvas.drawLine(0, 0, 99,0, paint); 
     this.canvas.drawLine(99, 0, 99, 99, paint); 
     this.canvas.drawLine(0, 99, 99,99, paint); 

     //define cells 
     this.canvas.drawLine(0,50,99,50,paint); 
     this.canvas.drawLine(30,0,30,50,paint); 

     //draw green rectangle 
     this.canvas.drawRect(new Rect(0,0,50,50),paint); 
     //draw some text 
     paint.setTextSize(8); 
     paint.setColor(Color.RED); 
     String displayText = "test"; 


     Float textWidth = paint.measureText(displayText); 

     int px = width/2; 
     int py = height/2; 
     this.canvas.drawText(displayText, px - textWidth/2, py, paint); 
    } 

    @Override 
    public boolean dispatchTouchEvent(MotionEvent event) { 
     paint.setColor(Color.RED); 
     //change color of first cell 
     canvas.drawRect(new Rect(0,0,50,50),paint); 
     return super.dispatchTouchEvent(event); 
    } 

} 

問題是，這ElementView不上點擊反應。我有調度事件的重寫，但它不進來。任何人都可以幫助我嗎？如何使這個ElementView在點擊時作出反應？

Answer 1

我可能會做這樣的事情：

ElementView ev = (ElementView)findViewById(R.id.surface1); 
ev.setOnClickListener(evOnClick); 

public OnClickListener evOnClick = new OnClickListener() { 
    @Override 
    public void onClick(View v, int arg1) { 
    //DO ONCLICK STUFF 
    } 
}; 

我不知道你是否能真正把的onClick視圖定義裏面像你想，但我還想，如果有人可以告訴我怎麼。