思路: 第一种可以在gallery监听,跳转到另外一个activity里面,设置image。点击imageview时关闭掉这个activity。 第二、可以通过Matrix对象来变换图像,在选择的时候放大,在失去焦点的时候,缩小到原来的大小。 double scale = 1.2; int width = bm.getWidth(); int height = bm.getHeight(); Log.i(“size:”, width+”"); float scaleWidth = (float)(scale*width); float scaleHeight = (float)(scale*height); Log.i(“size:”, scaleWidth+”"); Matrix matrix = new Matrix(); matrix.postScale(scaleWidth, scaleHeight); bm = Bitmap.createBitmap(bm, 0, 0, width, height, matrix, true); 第三、通过动画 xmlns:android=”http://schemas.android.com/apk/res/android” android:interpolator=”@android:anim/decelerate_interpolator” android:fromXScale=”1″ android:toXScale=”1.1″ android:fromYScale=”1″ android:toYScale=”1.1″ android:pivotX=”50%” android:pivotY=”50%” android:duration=”500″> 第四、通过setLayoutParams view.setLayoutParams(new Gallery.LayoutParams(150,150)); int mCounts = g.getCount() – 1; if(position>0 && (position < mCounts)) { g.getChildAt(position - 1).setLayoutParams(new Gallery.LayoutParams(136, 88)); g.getChildAt(position + 1).setLayoutParams(new Gallery.LayoutParams(136, 88)); } if(position == 0) { g.getChildAt(position + 1).setLayoutParams(new Gallery.LayoutParams(136, 88)); } if(position == mCounts) { g.getChildAt(position - 1).setLayoutParams(new Gallery.LayoutParams(136, 88)); } 注释:其中(136, 88)是gallery中图片的大小,是在ImageAdapter里面设置的。(150,150)是选中图片放大后的大小,可以随便设置,只要跟(136, 88)区别就行了,是为了观察变化,我设置的是150而已。 第五、通过动画和LayoutParam结合 gallery.setOnItemSelectedListener(new OnItemSelectedListener(){ @Override public void onItemSelected(AdapterView<?> arg0, View arg1, int arg2, long arg3) { ImageView v = (ImageView)arg1; if(tempView != null && v.hashCode() != tempView.hashCode()){ tempView.setLayoutParams(new Gallery.LayoutParams(50,50)); } v.startAnimation(toLarge); tempView = v; v.setLayoutParams(new Gallery.LayoutParams(60,60)); // //v.setLayoutParams(new Gallery.LayoutParams(130,130)); tvName.setText(tempList.get(arg2).getPicName()); } @Override public void onNothingSelected(AdapterView<?> arg0) { tvName.setText(”Nothing selected .”); } });