如何在我的应用程序中共享 apk 文件(发送应用程序本身) [英] How can i share apk file in my app (send app itself)

问题描述

我正在尝试使用此代码将我的应用程序 apk 文件发送到另一台设备:

I am trying to use this code to send my application apk file to another device:

public static void sendAppItself(Activity paramActivity) throws IOException {
    PackageManager pm = paramActivity.getPackageManager();
    ApplicationInfo appInfo;
    try {
        appInfo = pm.getApplicationInfo(paramActivity.getPackageName(),
                PackageManager.GET_META_DATA);
        Intent sendBt = new Intent(Intent.ACTION_SEND);
        sendBt.setType("*/*");
        sendBt.putExtra(Intent.EXTRA_STREAM,
                Uri.parse("file://" + appInfo.publicSourceDir));

        paramActivity.startActivity(Intent.createChooser(sendBt,
                "Share it using"));
    } catch (PackageManager.NameNotFoundException e1) {
        e1.printStackTrace();
    }
}

此代码运行良好.

但是与此代码共享的apk文件的名称是base.apk

But the name of the apk file shared with this code is base.apk

我该如何更改?

推荐答案

将文件从源目录复制到新目录.复制和共享复制的文件时重命名文件.共享完成后删除临时文件.

Copy the file from the source directory to a new directory. Rename the file while copying and share the copied file. Delete the temp file after share is complete.

 private void shareApplication() {
    ApplicationInfo app = getApplicationContext().getApplicationInfo();
    String filePath = app.sourceDir;

    Intent intent = new Intent(Intent.ACTION_SEND);

    // MIME of .apk is "application/vnd.android.package-archive".
    // but Bluetooth does not accept this. Let's use "*/*" instead.
    intent.setType("*/*");

    // Append file and send Intent
    File originalApk = new File(filePath);

    try {
        //Make new directory in new location
        File tempFile = new File(getExternalCacheDir() + "/ExtractedApk");
        //If directory doesn't exists create new
        if (!tempFile.isDirectory())
            if (!tempFile.mkdirs())
                return;
        //Get application's name and convert to lowercase
        tempFile = new File(tempFile.getPath() + "/" + getString(app.labelRes).replace(" ","").toLowerCase() + ".apk");
        //If file doesn't exists create new
        if (!tempFile.exists()) {
            if (!tempFile.createNewFile()) {
                return;
            }
        }
        //Copy file to new location
        InputStream in = new FileInputStream(originalApk);
        OutputStream out = new FileOutputStream(tempFile);

        byte[] buf = new byte[1024];
        int len;
        while ((len = in.read(buf)) > 0) {
            out.write(buf, 0, len);
        }
        in.close();
        out.close();
        System.out.println("File copied.");
        //Open share dialog
        intent.putExtra(Intent.EXTRA_STREAM, Uri.fromFile(tempFile));
        startActivity(Intent.createChooser(intent, "Share app via"));

    } catch (IOException e) {
        e.printStackTrace();
    }
}

更新:这个方法不再起作用，如果你实现它会抛出异常.从 android N 开始，如果我们想访问内存中的文件(如 apk 文件)，我们应该使用内容提供程序.如需更多信息，请访问此指南.尽管复制、重命名和共享复制版本的整个想法仍然有效.

Update: this method does not work anymore and throws exception if you implement it. Since android N, we should use content providers if we want to have access to files in memory(like the apk file). For more information please visit this Guide. Although the whole idea of copying and renaming and sharing the copied version is still valid.

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