Android HttpURLConnection下载网络图片设置系统壁纸

package xxxxx.utils;
import android.app.Activity;
import android.app.WallpaperManager;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.Environment;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
/**
* 设置壁纸
* 1、下载网络图片，使用HttpURLConnection
* 2、设置壁纸
* Created by zst on 2018/10/15.
*/
public class HttpURLConnectionUtil {
/**
* 设置系统壁纸
* 1、把网络图片设置系统壁纸
* 2、因为谷歌不维护其他框架了，所以使用HttpURLConnection来下载和配置
*
* @param activity
* @param imgUrl
*/
public static void setWallpaper(final Activity activity, final String imgUrl) {
//Log.e("壁纸", "链接：" + imgUrl);
new Thread(new Runnable() {
@Override
public void run() {
try {
URL httpUrl = new URL(imgUrl);//获取传入进来的url地址 并捕获解析过程产生的异常
//使用是Http访问 所以用HttpURLConnection 同理如果使用的是https 则用HttpsURLConnection
try {
HttpURLConnection conn = (HttpURLConnection) httpUrl.openConnection();//通过httpUrl开启一个HttpURLConnection对象
conn.setReadTimeout(5000);//设置显示超市时间为5秒
conn.setRequestMethod("GET");//设置访问方式
conn.setDoInput(true);//设置可以获取输入流
InputStream in = conn.getInputStream();//获取输入流
//创建一个写入ID卡的文件对象
FileOutputStream out = null;
File download = null;
String filename = String.valueOf(System.currentTimeMillis());//获取系统时间
//判断文件是否存在  Environment.MEDIA_MOUNTEDID卡是否挂载 如果是则创建文件对象
if (Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)) {
File parent = Environment.getExternalStorageDirectory();//获取ID卡目录
download = new File(parent, filename);//在父类的目录下创建一个以当前下载的系统时间为文件名的文件
out = new FileOutputStream(download);
}
byte[] b = new byte[2 * 1024];
int len;
if (out != null) {//id卡如果存在 则写入
while ((len = in.read(b)) != -1) {
out.write(b, 0, len);
}
}
//读取该文件中的内容
final Bitmap bitmap = BitmapFactory.decodeFile(download.getAbsolutePath());
activity.runOnUiThread(new Runnable() {
@Override
public void run() {
//设置图片为壁纸
//Bitmap bitmap = BitmapFactory.decodeResource(this.getResources(),R.drawable.bg_user_top);//设置项目res中的图片
WallpaperManager manager = WallpaperManager.getInstance(activity);
try {
manager.setBitmap(bitmap);
UiUtil.showToastLong(activity, "壁纸设置成功，请在桌面上查看");
} catch (IOException e) {
UiUtil.showToast(activity, "壁纸设置成失败");
e.printStackTrace();
}
}
});
} catch (IOException e) {
e.printStackTrace();
}
} catch (MalformedURLException e) {
e.printStackTrace();
}
}
}).start();
}
}