嘗試以編程方式安裝 APK 時出錯

Question

在此之后，我在下載后安裝 apk 的代碼是：

var downloadIntent: Intent;
if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
    val apkFile = File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS), "update.apk")
    val contentUri = FileProvider.getUriForFile(appContext, "${activity?.packageName}.fileprovider", apkFile)
    downloadIntent = Intent(Intent.ACTION_INSTALL_PACKAGE)
    downloadIntent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION)
    downloadIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK)
    downloadIntent.setDataAndType(contentUri, "application/vnd.android.package-archive")
}
appContext.startActivity(downloadIntent);

這是清單：

<uses-permission android:name="android.permission.REQUEST_INSTALL_PACKAGES" />
...
 <provider
            android:authorities="${applicationId}.fileprovider"
            android:exported="false"
            android:grantUriPermissions="true"
            android:name="androidx.core.content.FileProvider">
            <meta-data
                android:name="android.support.FILE_PROVIDER_PATHS"
                android:resource="@xml/file_paths"/>
        </provider>

結果是 package 安裝程序靜默停止。

Answer 1

感謝@Selvin，必須像這樣設置標志：

downloadIntent.flags = Intent.FLAG_ACTIVITY_NEW_TASK or Intent.FLAG_GRANT_READ_URI_PERMISSION