Android——给控件添加动画

package mars.animation06; import java.util.ArrayList; import java.util.HashMap; import java.util.List; import android.app.ListActivity; import android.os.Bundle; import android.view.View; import android.view.View.OnClickListener; import android.view.animation.Animation; import android.view.animation.AnimationUtils; import android.view.animation.LayoutAnimationController; import android.widget.Button; import android.widget.ListAdapter; import android.widget.ListView; import android.widget.SimpleAdapter; public class MainActivity extends ListActivity { private Button button = null; private ListView listView = null; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); listView = getListView(); button = (Button)findViewById(R.id.buttonId); button.setOnClickListener(new ButtonListener()); } private ListAdapter buildListAdapter() { List<HashMap<String, String>> list = new ArrayList<HashMap<String, String>>(); HashMap<String, String> m1 = new HashMap<String, String>(); m1.put("user_name", "平哥 斌哥"); m1.put("user_gender", "男"); HashMap<String, String> m2 = new HashMap<String, String>(); m2.put("user_name", "卓子 豆子"); m2.put("user_gender", "女"); HashMap<String, String> m3 = new HashMap<String, String>(); m3.put("user_name", "翔哥 小强"); m3.put("user_gender", "男"); list.add(m1); list.add(m2); list.add(m3); SimpleAdapter simpleAdapter = new SimpleAdapter(this, list, R.layout.item, new String[] { "user_name", "user_gender" }, new int[] { R.id.user_name, R.id.user_gender }); return simpleAdapter; } private class ButtonListener implements OnClickListener{ @Override public void onClick(View v) { listView.setAdapter(buildListAdapter()); Animation animation = (Animation)AnimationUtils.loadAnimation(MainActivity.this, R.anim.list_anim); LayoutAnimationController lac = new LayoutAnimationController(animation); lac.setOrder(LayoutAnimationController.ORDER_NORMAL); lac.setDelay(0.5f); listView.setLayoutAnimation(lac); } } }