/*
* Copyright (C) 2007 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.example.android.apis.view;
import com.example.android.apis.R;
import android.app.Activity;
import android.content.Intent;
import android.content.pm.ResolveInfo;
import android.os.Bundle;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.GridView;
import android.widget.ImageView;
import java.util.List;
public class LayoutAnimation1 extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
loadApps();
setContentView(R.layout.layout_animation_1);
GridView grid = (GridView) findViewById(R.id.grid);
grid.setAdapter(new LayoutAnimation1.AppsAdapter());
}
private List mApps;
private void loadApps() {
Intent mainIntent = new Intent(Intent.ACTION_MAIN, null);
mainIntent.addCategory(Intent.CATEGORY_LAUNCHER);
mApps = getPackageManager().queryIntentActivities(mainIntent, 0);
}
public class AppsAdapter extends BaseAdapter {
public View getView(int position, View convertView, ViewGroup parent) {
ImageView i = new ImageView(LayoutAnimation1.this);
ResolveInfo info = mApps.get(position % mApps.size());
i.setImageDrawable(info.activityInfo.loadIcon(getPackageManager()));
i.setScaleType(ImageView.ScaleType.FIT_CENTER);
final int w = (int) (36 * getResources().getDisplayMetrics().density + 0.5f);
i.setLayoutParams(new GridView.LayoutParams(w, w));
return i;
}
public final int getCount() {
return Math.min(32, mApps.size());
}
public final Object getItem(int position) {
return mApps.get(position % mApps.size());
}
public final long getItemId(int position) {
return position;
}
}
}
//
android:layoutAnimation="@anim/layout_grid_fade"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:padding="10dp"
android:verticalSpacing="10dp"
android:horizontalSpacing="10dp"
android:numColumns="auto_fit"
android:columnWidth="60dp"
android:stretchMode="columnWidth"
android:gravity="center" />
//anim/layout_grid_fade.xml
android:rowDelay="50%"
android:directionPriority="column"
android:animation="@anim/fade" />