介绍一个

1.grid layout item顺序显示的代码

2.grid layout item随机显示的代码

3.grid layout item到序显示的代码

4.grid layout item方式显示

LayoutAnimation1.java

/*
 * 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<ResolveInfo> 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;
        }
    }

}

<GridView xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/grid"
    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" />

<gridLayoutAnimation xmlns:android="http://schemas.android.com/apk/res/android"
        android:rowDelay="50%"
        android:directionPriority="column"
        android:animation="@anim/fade" />

如果把 android:directionPriority="column"

修改为android:animationOrder="random"则为随机显示

修改为android:directionPriority="row"
          android:direction="right_to_left|bottom_to_top"倒序显示

<alpha xmlns:android="http://schemas.android.com/apk/res/android"
       android:interpolator="@android:anim/accelerate_interpolator"
       android:fromAlpha="0.0" android:toAlpha="1.0"
       android:duration="@android:integer/config_longAnimTime" />

上面本来是个gif格式的图片不知道卫生传上去后不显示

改为水印方式首先修改layout文件为

layout_animation_6xml

<GridView xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/grid"
    android:layoutAnimation="@anim/layout_wave_scale"

    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:verticalSpacing="10dp"

    android:horizontalSpacing="10dp"
    android:numColumns="auto_fit"
    android:columnWidth="60dp"
    android:stretchMode="columnWidth"

    android:gravity="center" />

<gridLayoutAnimation xmlns:android="http://schemas.android.com/apk/res/android"
        android:rowDelay="75%"
        android:columnDelay="0%"
        android:directionPriority="none"
        android:animation="@anim/wave_scale" />

<set xmlns:android="http://schemas.android.com/apk/res/android" android:interpolator="@android:anim/accelerate_interpolator">
    <alpha
        android:fromAlpha="0.0"
        android:toAlpha="1.0"
        android:duration="100" />
    <scale
        android:fromXScale="0.5" android:toXScale="1.5"
        android:fromYScale="0.5" android:toYScale="1.5"
        android:pivotX="50%" android:pivotY="50%"
        android:duration="200" />
    <scale 
        android:fromXScale="1.5" android:toXScale="1.0"
        android:fromYScale="1.5" android:toYScale="1.0"
        android:pivotX="50%" android:pivotY="50%"
        android:startOffset="200"
        android:duration="100" />
</set>