Android app检测版本并下载apk后实现覆盖安装

Question

请问这个功能怎么做呢 大家是用的官方的DownloadManager 吗 为啥我这能下载就是不能提示安装 哪位大神有好的方法 确实挺急的 在线等！

Answer 1

/**
* 安装apk
*/
public static void installApk(Context context,String fileName)
{
File file = new File(fileName);
chmod("777", file.getAbsolutePath());
Intent intent = new Intent();
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
intent.setAction(Intent.ACTION_VIEW);
String type = "application/vnd.android.package-archive";
intent.setDataAndType(Uri.fromFile(file), type);
context.startActivity(intent);
}

 用DownloadManager下载并 注册广播及时监听下载完成状态 receiver = new DownloadCompleteReceiver();
            mContext.registerReceiver(receiver, new IntentFilter(
                    DownloadManager.ACTION_DOWNLOAD_COMPLETE));，在广播接收处里调用installApk方法,还可以定制相关提示信息

                                            class DownloadCompleteReceiver extends BroadcastReceiver {

    @Override
    public void onReceive(Context context, Intent intent) {
        if (intent.getAction().equals(
                DownloadManager.ACTION_DOWNLOAD_COMPLETE)) {
            mDownloadCustomViewDialog.dismiss();
            AppCookie.getInstance().putDownloadVersion(version);
            DialogUtil.showToastDialog(mContext, "下载成功...");
            try {
                Thread.sleep(1000);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
            AndroidSystemInfo.installApk(mContext, apkPath);
            if (receiver != null){
                mContext.unregisterReceiver(receiver);
                BaseActivity activity = (BaseActivity) mContext;
                activity.finish();
            }
        }
    }

}