Question

这是我的代码块：

notificationIntent.setDataAndType(FileProvider.getUriForFile(
            context,
            "TrySomething",new File(context.getFilesDir().getAbsolutePath() + "/update_file")
    ),ANDROID_PACKAGE);

这是我的XML文件：

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

但是我得到这个错误：

java.lang.IllegalArgumentException：无法找到已配置的根包含/data/data/com.example.trysomething/files/update_file

我该如何解决？

Answer 1

首先在src-> xml文件夹中创建Xml文件，例如例如名为file_paths_public.xml

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

然后将此代码添加到清单文件中

 <provider
        android:name="android.support.v4.content.FileProvider"
        android:authorities="<your app package>.provider"
        android:exported="false"
        android:grantUriPermissions="true">
        <meta-data
            android:name="android.support.FILE_PROVIDER_PATHS"
            android:resource="@xml/file_paths_public" />
    </provider>

现在创建一个将支持api 26及以下设备的函数返回有效的uri

 public static Uri getUriFromFile(Context theCtx, File theSrcPath) {
        Uri requirdUri;

        // Above Compile SDKversion: 25 -- Uri.fromFile Not working
        // So we have to use Provider

        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
            requirdUri = FileProvider.getUriForFile(theCtx,
                    theCtx.getApplicationContext().getPackageName() + ".provider",
                    theSrcPath);
        } else {
            requirdUri = Uri.fromFile(theSrcPath);
        }

        return requirdUri;
    }

现在无论何时需要使用此uri 像

 File FilePath = Environment.getExternalStorageDirectory().toString()/update_file/<here your file name >
   Uri shareImageUri = getUriFromFile(this, <your full file Path Add hear>)

Answer 2

检查清单中是否包含此内容

<provider
android:name="android.support.v4.content.FileProvider"
android:authorities="${applicationId}.provider"
android:exported="false"
android:grantUriPermissions="true">
<meta-data
android:name="android.support.FILE_PROVIDER_PATHS"
android:resource="@xml/provider_paths"/>
</provider>

provider_paths：

<?xml version="1.0" encoding="utf-8"?>
<paths>
<external-path name="directory_name" path="."/>
</paths>

获取文件URI为

Uri fileUri = FileProvider.getUriForFile(context, getApplicationContext().getPackageName() + ".provider", fileName(FILE))

java.lang.IllegalArgumentException：无法找到包含以下内容的已配置根目录

2 个答案: