之前一直在CSND发布文章，不过慢慢被简书的排版布局所吸引，打算迁到这个平台，这个是第一篇文章
下载并安装apk的方法很多，最好的方法是放在service中处理，这样在页面切换或者程序退出的时候，仍然可以正常的下载并弹出安装窗口。写下来主要是给自己留给备份，同时可作为分享用。
代码比较简单，分如下几块：
启动下载
private void startDownload() {
dm = (DownloadManager) getSystemService(DOWNLOAD_SERVICE);
DownloadManager.Request request = new DownloadManager.Request(
Uri.parse("http://d.koudai.com/com.koudai.weishop/1000f/weishop_1000f.apk"));
request.setMimeType("application/vnd.android.package-archive");
request.setDestinationInExternalPublicDir(Environment.DIRECTORY_DOWNLOADS, "myApp.apk");
enqueue = dm.enqueue(request);
}
然后是监听下载完成的Receive
receiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
intent = new Intent(Intent.ACTION_VIEW);
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
intent.setDataAndType(Uri.fromFile(new File(Environment.getExternalStorageDirectory() + "/download/myApp.apk")),
"application/vnd.android.package-archive");
startActivity(intent);
stopSelf();
}
};
在监听到下载的文件后，会调用stopSelf自动关闭该service
然后，就是在activity中，启动该service
startService(new Intent(context, DownloadService.class));
完整的代码如下：
public class DownloadService extends Service {
private DownloadManager dm;
private long enqueue;
private BroadcastReceiver receiver;
@Nullable
@Override
public IBinder onBind(Intent intent) {
return null;
}
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
receiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
intent = new Intent(Intent.ACTION_VIEW);
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
intent.setDataAndType(Uri.fromFile(new File(Environment.getExternalStorageDirectory() + "/download/myApp.apk")),
"application/vnd.android.package-archive");
startActivity(intent);
stopSelf();
}
};
registerReceiver(receiver, new IntentFilter(DownloadManager.ACTION_DOWNLOAD_COMPLETE));
startDownload();
return Service.START_STICKY;
}
@Override
public void onDestroy() {
unregisterReceiver(receiver);
super.onDestroy();
}
private void startDownload() {
dm = (DownloadManager) getSystemService(DOWNLOAD_SERVICE);
DownloadManager.Request request = new DownloadManager.Request(
Uri.parse("http://d.koudai.com/com.koudai.weishop/1000f/weishop_1000f.apk"));
request.setMimeType("application/vnd.android.package-archive");
request.setDestinationInExternalPublicDir(Environment.DIRECTORY_DOWNLOADS, "myApp.apk");
enqueue = dm.enqueue(request);
}
}
很简单的一篇文章，希望对大家有所帮助
