Question

这是用于打开和安装已下载应用程序的代码；这种方法问到android的api是它的24向上吗？方法“ apk uri” HTML解释路线。运行时会崩溃。

String action = intent.getAction();
        if (DownloadManager.ACTION_DOWNLOAD_COMPLETE.equals(action)) {
            intent.getLongExtra(DownloadManager.EXTRA_DOWNLOAD_ID, 0);
            DownloadManager.Query query = new DownloadManager.Query();
            Cursor cursor = downloadManager.query(query);
            if (cursor.moveToFirst()) {
                int i = cursor.getColumnIndex(DownloadManager.COLUMN_STATUS);
                if (DownloadManager.STATUS_SUCCESSFUL == cursor.getInt(i)) {
                    String uri = cursor.getString(cursor.getColumnIndex(DownloadManager.COLUMN_LOCAL_URI));

                    File file = new File(Environment.getExternalStorageDirectory(), "/Download/AromaPark.apk");
                    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
                        Uri apkUri = FileProvider.getUriForFile(activity, "com.sysvoid.aromapark.provider", file);
                        Intent install = new Intent(Intent.ACTION_INSTALL_PACKAGE);
                        install.setData(apkUri);
                        install.setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
                        activity.startActivity(intent);
                    } else {
                        Intent install = new Intent(Intent.ACTION_VIEW);
                        install.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK |
                                Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_CLEAR_TASK);
                        install.setDataAndType(Uri.parse(uri),
                                "application/vnd.android.package-archive");
                        activity.startActivity(install);
                    }
                }
            }
        }

如您所见，这是代码的恢复。 P.s.以获得更多的领悟力。

   File file = new File(Environment.getExternalStorageDirectory(), "/Download/AromaPark.apk");
                if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
                    Uri apkUri = FileProvider.getUriForFile(activity, "com.sysvoid.aromapark.provider", file);
                    Intent install = new Intent(Intent.ACTION_INSTALL_PACKAGE);
                    install.setData(apkUri);
                    install.setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
                    activity.startActivity(intent);
                }

This is the XML path:


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

内部android清单代码

<provider
            android:name="androidx.core.content.FileProvider"
            android:authorities="com.sysvoid.aromapark.provider"
            android:exported="false"
            android:grantUriPermissions="true">
            <meta-data
                android:name="android.support.FILE_PROVIDER_PATHS"
                android:resource="@xml/filepaths" />
        </provider>

错误在这里运行

Uri apkUri = FileProvider.getUriForFile(activity, "com.sysvoid.aromapark.provider", file);

错误消息

java.lang.RuntimeException: Error receiving broadcast Intent { act=android.intent.action.DOWNLOAD_COMPLETE flg=0x10 pkg=com.sysvoid.aromapark (has extras) } in com.sysvoid.service.Receiver@7f8d274
        at android.app.LoadedApk$ReceiverDispatcher$Args.lambda$-android_app_LoadedApk$ReceiverDispatcher$Args_55615(LoadedApk.java:1418)
        at android.app.-$Lambda$aS31cHIhRx41653CMnd4gZqshIQ.$m$7(Unknown Source:4)
        at android.app.-$Lambda$aS31cHIhRx41653CMnd4gZqshIQ.run(Unknown Source:39)
        at android.os.Handler.handleCallback(Handler.java:790)
        at android.os.Handler.dispatchMessage(Handler.java:99)
        at android.os.Looper.loop(Looper.java:164)
        at android.app.ActivityThread.main(ActivityThread.java:6651)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:438)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:810)
     Caused by: java.lang.IllegalArgumentException: Failed to find configured root that contains /storage/emulated/0/Download/AromaPark.apk
        at androidx.core.content.FileProvider$SimplePathStrategy.getUriForFile(FileProvider.java:739)
        at androidx.core.content.FileProvider.getUriForFile(FileProvider.java:418)
        at com.sysvoid.service.Receiver.onReceive(Receiver.java:53)
        at android.app.LoadedApk$ReceiverDispatcher$Args.lambda$-android_app_LoadedApk$ReceiverDispatcher$Args_55615(LoadedApk.java:1400)

打开在其他移动应用程序中下载的移动应用程序（验证时崩溃）？

0 个答案: