无法从 URI 在图像视图上加载图像

Question

我正在尝试加载存储在应用程序文件夹上的图像当我打开活动时，我从logcat收到了这个错误：

1-20 01:30:40.125 14331-14331/mx.eusaga。af W/ImageView:无法打开内容：content://mx.eusaga.af.fileprovider/imagenes/1-db384fa8-f28b-4595-abbf-d45d38fd4036.jpgjava.io。FileNotFoundException：android.os.Parcel上没有此类文件或目录。openFileDescriptor（本机方法）在android.os.ParcelFileDescriptors.openInternal（ParcelFileDescriptor.java:253）在android.os.parcelFileDescrcator.open（ParcelFile描述符.java:199）在andro.support.v4.content.FileProvider.openFile（FileProviders.java:545）在Android.content.ContentProvider.openAssetFile（ContentProvider.java:1322）在Android尔.content.content.ContentProvider.openTypedAssetFile（ContentProvider.java:1502）在android.content.ContentProvider.openTypedAssetFile（ContentProviler.java:1568）在android.content.Contents Provider$Transport.OpenType DassetFileFile（Contents Provider.java:391）在Android.content.ContententResolver.OpenTypleDassetFilesDescriptor（ContentResolder.java:1080）在android.；content.content.ContentRessolverandroid.widget.ImageView.resolveUri（ImageView.java:768）上的android.content.ContentResolver.openInputStream（ContentResolver.java:646）和android.Wicket.ImageViewer.setImageURI（ImageView.java:429）上的android.support.v7.widget.AppCompatImageView.setImageURI（AppCompatImage:124）和mx.eusaga.af.Adapter.ImagenAdapter.onBindViewHolder（ImagenAdapter.java:51）上的mxandroid上的mx.eusaga.af.Adapter.ImagenAdapter.onBindViewHolder（ImagenAdapter.java:30）和android上的support.v7.widget.RecyclerView$Adapter.OnBindView Holder（RecyclerView.java:6482）和android下的support.v7.widget.RecyclerView$Adapter。android上的bindViewHolder（ReciplerView.java:6515）和Android下的support.v7.wicket.RecycerView$RecyclerViewHolderByDeadline（Recycler.java:5458）android.support.v7.widget.RecyclerView$Recycler.tryGetViewHolderForPositionByDeadline（RecyclerViewer.java:5724）在android.Supports.v7.widget.RecyclerView$Recycller.getViewForPosition（RecycerView.java:5563）在android.support.v7.Wicket.Recycler在android.下一个（LinearLayoutManager.java:2229）在android.support.v7.widget.GridLayoutManager.layoutChunk（GridLayotManager.java:556）在android.Supports.v7.widget.LinearLayoutManager.Layout.fill（LinearLayutManager.java:1516）在android.support.v7.widget.LinearLayotManager.onLayoutChildren（LinearLayoutManager.java:608）在android.support.v7.Wicket.GridlayoutManagersandroid.support.v7.widget.RecyclerView.dispatchLayoutStep2（RecyclerView.java:3693）在android.Supports.v7.widget.RecyclerView.onMeasure（RecycerView.java:3109）在android.view.view.view.view.ViewGroup.measureChildWithMargins（ViewGroup.java:5535）在andro.Widgets.LinearLayout.measure.MeasuranceChildBeforeYout（LinearLayout.java:1436）在android.widget.LinearLayout.measureVertical（LinearLayot.java:722）和android.Wicket.LinearLayout.onMeasure（Linearlayot.java:613）在android.view.view.measure中的android.view.view.ViewGroup.MeasereChildWithMargins（ViewGroup.java:5535）在android.widget.FrameLayout.OnMeasurement中的android.support.v7.Widgets.ContentFrameLayet.onMeasureandroid.widget.LinearLayout.measureChildBeforRelayout（linearlayot.java:1436）的android.view.view.ViewGroup.MeasureHildWithMargins（ViewGroup.java:5535）的android.widget.LinearLayout.view.view.measure（view.java:17547）的android.view.ViewGroup.MeasureChild（ViewGroup.java:5535）android.widget.FrameLayout.onMeasure的android.view.ViewGroup.MeasureHildWithMargins（ViewGroup.java:5535）和android.Wicket.FrameLayout.onMeasure（FrameLayot.java:436）的android.view.view.view.view.ViewGroup.measureChildWithMargins（ViewGroup.java:5535）在android.widget.LinearLayout的android.LinearLayout.LinearLayout.java:1436和android.LinealLayout.的LinearLayeout.measure.Measerevertical（LinearLayout.java:722）在android.widget.LinearLayout.onMeasure（L

我用来获取图像的代码如下:

private Uri obtenerImagen(String archivo) {
    File Directorio = new File(context.getFilesDir() + "/imagenes/");
    Directorio.mkdirs();
    File imagen = new File(Directorio,archivo + ".jpg");
    Uri uri = FileProvider.getUriForFile(context,"mx.eusaga.af.fileprovider",imagen);
    return uri;
}

这是我的文件提供者：

<!-- FileProvider -->
<provider
    android:name="android.support.v4.content.FileProvider"
    android:authorities="mx.eusaga.af.fileprovider"
    android:exported="false"
    android:grantUriPermissions="true" >
    <meta-data
        android:name="android.support.FILE_PROVIDER_PATHS"
        android:resource="@xml/file_paths" />
</provider>

这些是我的文件路径：

<paths xmlns:android="http://schemas.android.com/apk/res/android">
    <files-path name="imagenes" path="imagenes/"/>
</paths>

文件夹图像和文件1-db384fa8-f28b-4595-abbf-d45d38fd4036.jpg存在于正确的文件夹中。

感谢您的帮助！！

Answer 1

你的错误是

FileNotFoundException

表示您提供的路径无效。请检查您的目录和文件路径

Answer 2

你试过毕加索：http://square.github.io/picasso/ 吗？您可以从文件中加载图像，代码更少。

Answer 3

 String folderpath = "/data/data/" + getPackageName() + "/files";
 String imagefolderpath = "/data/data/" + getPackageName() + "/files" +  "/images";

 File fileFolder = new File(folderpath);
        // check if file Folder exists, if not create one and its subfolders
        if (!fileFolder.exists()) {
            fileFolder.mkdir();
        }

File imageFolder = new File(imagefolderpath);
        // check if image Folder exists, if not create one and its subfolders
        if (!imageFolder.exists()) {
            imageFolder.mkdir();
        }

String imageFilePath = imageFolder + "/test.jpg";

File imagePath = new File(imageFilePath);
if (!imageFolder.exists()) {
    Log.d("Log","Image not exists");
}