第三章: 设置手机背景图片
效果:http://dl.iteye.com/upload/attachment/403688/205bab8b-e3ad-3cc8-8e71-0a2f9dc18623.jpg
http://dl.iteye.com/upload/attachment/403691/2d716091-4ee1-3702-bc27-c13a70253358.jpg
http://dl.iteye.com/upload/attachment/403695/4aa9fd09-df8b-3f16-9124-92c3662ab476.jpg
http://dl.iteye.com/upload/attachment/403700/b2e111bd-d8ba-31a1-9a77-0c5f7112c3af.jpg
main.xml
<?xml version="1.0" encoding="utf-8"?><AbsoluteLayoutandroid:id="@+id/widget0"android:layout_width="fill_parent"android:layout_height="fill_parent"xmlns:android="http://schemas.android.com/apk/res/android"><Galleryandroid:id="@+id/gall"android:layout_width="320px"android:layout_height="429px"android:layout_x="0px"android:layout_y="2px"></Gallery></AbsoluteLayout>
AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?><manifest xmlns:android="http://schemas.android.com/apk/res/android" package="wallpaper.test" android:versionCode="1" android:versionName="1.0"> <application android:icon="@drawable/icon" android:label="@string/app_name"> <activity android:name=".WallpaperTest" android:label="@string/app_name"> <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> </application><uses-permission android:name="android.permission.SET_WALLPAPER"></uses-permission></manifest>
package wallpaper.test;import java.io.IOException;import java.io.InputStream;import android.app.Activity;import android.app.AlertDialog;import android.content.DialogInterface;import android.content.res.Resources;import android.os.Bundle;import android.view.View;import android.widget.AdapterView;import android.widget.Gallery;import android.widget.SpinnerAdapter;import android.widget.Toast;public class WallpaperTest extends Activity {protected static InputStream io;private ImageAdapter myImage; /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); /** 载入main.xml文件 */ setContentView(R.layout.main); /** 设置一组图片*/ Integer[] myImageIde={ R.drawable.pic01, R.drawable.pic02, R.drawable.pic03, R.drawable.pic04, R.drawable.pic05 }; myImage=new ImageAdapter(WallpaperTest.this,myImageIde); /** 设置图为Gallery的显示方式*/ Gallery g=(Gallery)findViewById(R.id.gall); g.setAdapter((SpinnerAdapter) myImage); g.setOnItemClickListener(new Gallery.OnItemClickListener(){ /** 设置ITEM的点击事件*/@Overridepublic void onItemClick(AdapterView<?> parent, View v, final int position,long id) {/**设置 消息框*/new AlertDialog.Builder(WallpaperTest.this)/** 设置消息框的标题*/.setTitle(R.string.alert_title)/** 设置标题框的图片*/.setIcon(myImage.myImageIds)/** 设置消息框体的文本*/.setMessage(R.string.alert_message)/** 设置点击确定按钮的事件*/.setPositiveButton(R.string.alert_ok, new DialogInterface.OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {Resources resources=getBaseContext().getResources();io=resources.openRawResource(myImage.myImageIds);try {/** 更换桌面*/setWallpaper(io);/** 设置Toast的消息*/Toast.makeText(WallpaperTest.this,getString(R.string.alert_isgllery), Toast.LENGTH_LONG).show();} catch (Exception e) {e.printStackTrace();}}/** 设置点击取消按钮的事件*/}).setNegativeButton(R.string.alert_cancle, new DialogInterface.OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {/** 设置Toast的消息*/Toast.makeText(WallpaperTest.this, getString(R.string.alert_no), Toast.LENGTH_LONG).show();}}).show();} }); } @Override public void setWallpaper(InputStream data) throws IOException { super.setWallpaper(data); }}
package wallpaper.test;import android.content.Context;import android.content.res.TypedArray;import android.view.View;import android.view.ViewGroup;import android.widget.BaseAdapter;import android.widget.Gallery;import android.widget.ImageView;public class ImageAdapter extends BaseAdapter{int mGalleryBackground;private Context context;protected Integer[] myImageIds;public ImageAdapter(Context c,Integer[] aid){context=c;myImageIds=aid;/** 设置背景图片*/TypedArray a=c.obtainStyledAttributes(R.styleable.Gallery);mGalleryBackground=a.getResourceId(R.styleable.Gallery_android_galleryItemBackground, 0);a.recycle();}@Overridepublic int getCount() {// TODO Auto-generated method stubreturn myImageIds.length;}@Overridepublic Object getItem(int position) {// TODO Auto-generated method stubreturn null;}@Overridepublic long getItemId(int position) {// TODO Auto-generated method stubreturn position;}@Overridepublic View getView(int position, View convertView, ViewGroup parent) {ImageView i =new ImageView(context);/** 设置背景图片给ImageView*/i.setImageResource(myImageIds);/**图片的高和宽*/i.setScaleType(ImageView.ScaleType.FIT_XY);/**设置Gallery的背景图*/i.setBackgroundResource(mGalleryBackground);return i;}}
页:
[1]