Android 7打开APK,ACTION_VIEW无效(包安装程序已停止)

Question

我的应用程序具有自动更新功能,可下载APK,然后使用Intent.ACTION_VIEW打开软件包安装程序.

最多7个它完美地工作(通过向正常文件提供Intent://)

使用Android 7,我不得不改为使用FileProvider.代码的唯一区别是:

Intent installIntent = new Intent(Intent.ACTION_VIEW);
          if (android.os.Build.VERSION.SDK_INT <= Build.VERSION_CODES.M) {
            installIntent.setDataAndType(uri,
                manager.getMimeTypeForDownloadedFile(downloadId));
          } else {

            Uri apkUri = FileProvider.getUriForFile(AutoUpdate.this,
                BuildConfig.APPLICATION_ID, file);
              installIntent.setDataAndType(apkUri,manager.getMimeTypeForDownloadedFile(downloadId));
          }
          activity.startActivity(installIntent);

一旦调用了startActivity,我每次都会得到这个

这是Android 7的错误吗？或者某些/许可缺少我的一面？

编辑AndroidManifest

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
    <uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
    <uses-permission android:name="android.permission.WAKE_LOCK" />
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
    <uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW" />
    <uses-permission android:name="android.permission.READ_LOGS" />

 <application ...>
 ...
   <provider
            android:name="android.support.v4.content.FileProvider"
            android:authorities="com.myapp"
            android:exported="false"
            android:enabled="true"
            android:grantUriPermissions="true">
            <meta-data
                android:name="android.support.FILE_PROVIDER_PATHS"
                android:resource="@xml/provider_paths"/>
        </provider>
  </application>

路径xmlfile

<?xml version="1.0" encoding="utf-8"?>
<paths xmlns:android="http://schemas.android.com/apk/res/android">
    <external-path name="myfolder" path="."/>
</paths>

Answer 1

尝试如下,它帮助我和它在Android N7.0中工作.

File toInstall = new File(appDirectory, appName + ".apk");
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
    Uri apkUri = FileProvider.getUriForFile(activity, BuildConfig.APPLICATION_ID + ".provider", toInstall);
    Intent intent = new Intent(Intent.ACTION_INSTALL_PACKAGE);
    intent.setData(apkUri);
    intent.setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
    activity.startActivity(intent);
} else {
    Uri apkUri = Uri.fromFile(toInstall);
    Intent intent = new Intent(Intent.ACTION_VIEW);
    intent.setDataAndType(apkUri, "application/vnd.android.package-archive");
    intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
    activity.startActivity(intent);
}

Answer 2

尝试将读取 uri 权限添加到您的意图中：

installIntent.setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);

检查这个答案 /sf/answers/2809183751/