小编Nam*_*tha的帖子

我有以下代码:

tv.setOnKeyListener(new View.OnKeyListener() {
        public boolean onKey(View v, int keyCode, KeyEvent event) {
         switch(keyCode) 
            {
                case KeyEvent.KEYCODE_0:
                    Log.v(TAG, "Keycode_0");
                    return true;
                    //break;

                case KeyEvent.KEYCODE_1:
                    Log.v(TAG, "Keycode_1");
                    return true;
                    //break;
                case KeyEvent.KEYCODE_D:
                    Log.v(TAG, "Keycode_D");
                    return true;
                    //break;
                case KeyEvent.KEYCODE_2:
                    Log.v(TAG, "Keycode_2");
                    return true;
                    //break;
                case KeyEvent.KEYCODE_TAB:
                    Log.v(TAG, "Keycode_TAB");
                    return true;
                    //break;
                case KeyEvent.KEYCODE_DEL:
                    Log.v(TAG, "Keycode_DEL");
                    return true;
                    //break;
                case KeyEvent.KEYCODE_COMMA:
                    Log.v(TAG, "Keycode_COMMA");
                    return true;
                    //break;
                case KeyEvent.KEYCODE_ENTER:
                    Log.v(TAG, "KEYCODE_ENTER");
                    i=KeyEvent.KEYCODE_ENTER;
                    Log.v(TAG, "KEYCODE_ENTER"+i);
                    return true;
                    //break;
               case KeyEvent.KEYCODE_SHIFT_LEFT:
                    Log.v(TAG, "KEYCODE_SHIFT_LEFT"+KeyEvent.KEYCODE_SHIFT_LEFT);
                    return true; …

我想在画布里面玩gif.我使用了以下代码.它不起作用.plz tel me wat我的代码或其他任何方式都是错误的.

var drawingCanvas = document.getElementById('myDrawingCanvas');
if(drawingCanvas.getContext) 
{
    var context = drawingCanvas.getContext('2d');
    var imgObj = new Image();

    imgObj.onload = function () 
    {       
        context.drawImage(imgObj, 0, 0, 1024, 600);
    }
    imgObj.src='HTML Images/Spell Bee/images/mainscreen.gif';
}