由程式直接安裝 APK檔

private void startInstall(File tempFile) {
    Intent intent = new Intent();
    intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
    intent.setAction(android.content.Intent.ACTION_VIEW);
 
    // -------設定intent的file與MimeType
    intent.setDataAndType(Uri.fromFile(tempFile), "application/vnd.android.package-archive");
    startActivity(intent);
}