华为手机更新安装apk没有自动打开问题

刚开始写的apk安装代码，结果在华为mate8中更新apk，安装完之后并没有重新启动。

  Intent intent = new Intent();
        intent.setAction(Intent.ACTION_VIEW);
        File file = new File(apkPath);
        if (file.exists()) {
            if (Build.VERSION.SDK_INT >= 24) {
                intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
                Uri fileUri = FileProvider.getUriForFile(activity, "com.wanhe.eng100.listening", file);
                intent.setDataAndType(fileUri,
                        "application/vnd.android.package-archive");
            } else {
                intent.setDataAndType(Uri.fromFile(file),
                        "application/vnd.android.package-archive");
                intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
            }
            activity.startActivity(intent);
        }

之后我把以上代码做了更改就可以了。

 Intent intent = new Intent();
        intent.setAction(Intent.ACTION_VIEW);
        intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
        intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
        File file = new File(apkPath);
        if (file.exists()) {
            if (Build.VERSION.SDK_INT >= 24) {
                Uri fileUri = FileProvider.getUriForFile(activity, "com.wanhe.eng100.listening", file);
                intent.setDataAndType(fileUri,
                        "application/vnd.android.package-archive");
            } else {
                intent.setDataAndType(Uri.parse("file://" + apkPath),
                        "application/vnd.android.package-archive");
            }
            activity.startActivity(intent);
        }