安卓：安装apk文件编程 [英] Android: install .apk programmatically

问题描述

首先，我从做这个有帮助 Android的下载二进制文件问题的 和<一href="http://stackoverflow.com/questions/4604239/install-application-programmatically-on-android">Install以编程方式在Android 的应用。谢谢你们！

First of all, I made this with help from Android download binary file problems and Install Application programmatically on Android. Thanks guys!

我想使自动更新和自动安装一次。这是本地所以它的非市场化的应用程序。

I want to make auto-update and auto-install at once. It is local so it's non-market application.

下面是我的code吧：

Here is my code for it:

public void Update(String apkurl){
    try {
        URL url = new URL(apkurl);
        HttpURLConnection c = (HttpURLConnection) url.openConnection();
        c.setRequestMethod("GET");
        c.setDoOutput(true);
        c.connect();

        String PATH = Environment.getExternalStorageDirectory() + "/download/";
        File file = new File(PATH);
        file.mkdirs();
        File outputFile = new File(file, "app.apk");
        FileOutputStream fos = new FileOutputStream(outputFile);

        InputStream is = c.getInputStream();

        byte[] buffer = new byte[1024];
        int len1 = 0;
        while ((len1 = is.read(buffer)) != -1) {
            fos.write(buffer, 0, len1);
        }
        fos.close();
        is.close();//till here, it works fine - .apk is download to my sdcard in download file

        Intent promptInstall = new Intent(Intent.ACTION_VIEW)
            .setData(Uri.parse(PATH+"app.apk"))
            .setType("application/android.com.app");
        startActivity(promptInstall);//installation is not working

    } catch (IOException e) {
        Toast.makeText(getApplicationContext(), "Update error!", Toast.LENGTH_LONG).show();
    }
}  

我的权限是网​​络， WRITE_EXTERNAL_STORAG​​E ， INSTALL_PACKAGES 和 DELETE_PACKAGES 。

在意向 promptInstall 加载，应用程序崩溃= /

When Intent promptInstall is loaded, the app crashes =/

所以，我思念的权限，或者是我的code不正确，或是否有更好的方法来做到这一点？

So, am I missing permissions or is my code incorrect, or is there a better way to do this?

推荐答案

我解决了这个问题。我在使用setData（URI）犯的错误和的setType（字符串）。

I solved the problem. I made mistake in setData(Uri) and setType(String).

Intent intent = new Intent(Intent.ACTION_VIEW);
intent.setDataAndType(Uri.fromFile(new File(Environment.getExternalStorageDirectory() + "/download/" + "app.apk")), "application/vnd.android.package-archive");
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
startActivity(intent);

这是正确的，现在，我的自动更新的工作。感谢帮助。 =）

That is correct now, my auto-update is working. Thanks for help. =)

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