用GridView加动画写了一个滑动放大显示选中图片

package com.src; import android.app.Activity; import android.os.Bundle; import android.view.View; import android.view.Window; import android.view.WindowManager; import android.view.animation.Animation; import android.view.animation.AnimationSet; import android.view.animation.ScaleAnimation; import android.widget.AdapterView; import android.widget.AdapterView.OnItemClickListener; import android.widget.AdapterView.OnItemSelectedListener; import android.widget.GridView; public class GrideActivity extends Activity { private GridView gallery; private ImageAdapter adapter; private int[] image = { R.drawable.lomoeffect_01, R.drawable.lomoeffect_02, R.drawable.lomoeffect_03, R.drawable.lomoeffect_04, R.drawable.lomoeffect_05 }; private int[] different = { R.drawable.selct1, R.drawable.selct2, R.drawable.selct3, R.drawable.selct4, R.drawable.selct5 }; private int[] images = { R.drawable.lomoeffect_01, R.drawable.lomoeffect_02, R.drawable.lomoeffect_03, R.drawable.lomoeffect_04, R.drawable.lomoeffect_05 }; Animation animation; private AnimationSet manimationSet; public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); this.getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN); requestWindowFeature(Window.FEATURE_NO_TITLE); getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); setContentView(R.layout.main); // animation = AnimationUtils.loadAnimation(this, R.anim.gradually); adapter = new ImageAdapter(this, images); gallery = (GridView) findViewById(R.id.gallery); gallery.setAdapter(adapter); gallery.setNumColumns(5); gallery.smoothScrollToPosition(2); // gallery.setSelector(0); gallery.setOnItemSelectedListener(new OnItemSelectedListener() { public void onItemSelected(AdapterView<?> arg0, View arg1, int position, long arg3) { // arg1.startAnimation(animation); images[position] = different[position]; if (position == 0) { for (int i = position + 1; i < images.length; i++) { images[i] = image[i]; } } else if (position == images.length - 1) { for (int i = 0; i < images.length - 1; i++) { images[i] = image[i]; } } else { for (int i = 0; i < position; i++) { images[i] = image[i]; } for (int i = position + 1; i < images.length; i++) { images[i] = image[i]; } } // AnimationSet animationSet = new AnimationSet(true); // // animationSet.setFillEnabled(true); // // animationSet.setFillAfter(true); // ScaleAnimation scaleAnimation = new ScaleAnimation(1, 1.2f,1, // 1.2f, // Animation.RELATIVE_TO_SELF, 0.5f, Animation.RELATIVE_TO_SELF, // 0.5f); // animationSet.addAnimation(scaleAnimation); // animationSet.setDuration(1000); // arg1.startAnimation(animationSet); // if (position != 0 && position != 4) { AnimationSet animationSet = new AnimationSet(true); if (manimationSet != null && manimationSet != animationSet) { ScaleAnimation scaleAnimation = new ScaleAnimation(2, 0.5f, 2, 0.5f, Animation.RELATIVE_TO_SELF, 0.5f, Animation.RELATIVE_TO_SELF, 0.5f); scaleAnimation.setDuration(1000); manimationSet.addAnimation(scaleAnimation); manimationSet.setFillAfter(true); arg1.startAnimation(manimationSet); } ScaleAnimation scaleAnimation = new ScaleAnimation(1, 2f, 1, 2f, Animation.RELATIVE_TO_SELF, 0.5f, Animation.RELATIVE_TO_SELF, 0.5f); scaleAnimation.setDuration(1000); animationSet.addAnimation(scaleAnimation); animationSet.setFillAfter(true); arg1.startAnimation(animationSet); manimationSet = animationSet; } else { if (null != manimationSet) manimationSet.setFillAfter(false); } // adapter.notifyDataSetChanged(); } public void onNothingSelected(AdapterView<?> arg0) { // TODO Auto-generated method stub } }); gallery.setOnItemClickListener(new OnItemClickListener() { public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, long arg3) { // TODO Auto-generated method stub } }); } }