android图片浏览器 代码

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热心网友 时间：2022-06-26 13:23

/*
* 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 android.apps;import android.app.Activity;
import android.content.Context;
import android.content.res.TypedArray;
import android.net.Uri;
import android.os.Bundle;
import android.view.View;
import android.view.ViewGroup;
import android.view.Window;
import android.view.WindowManager;
import android.widget.BaseAdapter;
import android.widget.Gallery;
import android.widget.ImageView;public class Gallery1 extends Activity {
private Context mContext;
private Uri[] uri =GetImagesFromSDCard.uriArray;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
//影藏顶部程序名称 写在setContentView(R.layout.gallery_1);之前，不然报错
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.gallery_1);
//影藏顶部电量等图标
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN);
Gallery g = (Gallery) findViewById(R.id.gallery);
g.setAdapter(new ImageAdapter(this));
//设置显示第几张图片 参数是GetImagesFromSDCard中的静态变量
g.setSelection(GetImagesFromSDCard.imagePosition);
}

public class ImageAdapter extends BaseAdapter {
int mGalleryItemBackground;
public ImageAdapter(Context c) {
mContext = c;
/*
* 使用在res/values/attrs.xml中的<declare-styleable>定义 的Gallery属性.
*/
TypedArray a = obtainStyledAttributes(R.styleable.Gallery1);
/* 取得Gallery属性的Index id */
mGalleryItemBackground = a.getResourceId(
R.styleable.Gallery1_android_galleryItemBackground, 0);
/* 让对象的styleable属性能够反复使用 */
a.recycle();
} /* 重写的方法getCount,返回图片数目 */
public int getCount() {
return uri.length;
} /* 重写的方法getItemId,返回图像的数组id */ public Object getItem(int position) {
return position;
} public long getItemId(int position) {
return position;
} /* 重写的方法getView,返回一View对象 */
public View getView(int position, View convertView, ViewGroup parent){
ImageView view = new ImageView(Gallery1.this);
//设置所有图片的资源地址
view.setImageURI(uri[position]);
view.setScaleType(ImageView.ScaleType.FIT_XY);
view.setLayoutParams(new Gallery.LayoutParams(240, 320));
/* 设置Gallery背景图 */
view.setBackgroundResource(mGalleryItemBackground);
return view;
}

}
}