setOnTouchlistener用于图像视图

Question

我正在通过startActivityForResult()从gallery加载图像并在onActivity()中加载图像.我不能为该图像实现touchlistener吗？供参考见下文.

protected void onActivityResult(int requestCode, int resultCode,
            Intent data) {
        if (requestCode == SELECT_PICTURE) {
        ...... 
        ...... 
          Bitmap bitmapPreview = BitmapFactory.decodeFile(fileSrc); //load preview image

         setimage.setImageBitmap(BitmapPreview);
     setimage.setOnTouchListener(new OnTouchListener() {

    @Override
    public boolean onTouch(View v, MotionEvent event) {
        Toast.makeText(getApplicationContext(), "Image touced!", Toast.LENGTH_SHORT).show();
                        return true;
    }
    });

Answer 1

确保您需要正确导入侦听器

import android.view.View.OnTouchListener;

在您的文件的顶部与其他导入.