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配置的根目录寻找一些帮助我试图存储图片时遇到的错误我正在尝试使用相机拍摄的图片发展。该错误是java.lang.IllegalArgumentException：无法找到包含/存储/模拟/ 0 /图片/
java.lang.IllegalArgumentException异常：未能找到配置的根即包含/存储/模拟/ 0 /图片/ JPEG20161108_153704_
的logcat的指向该方法在我的代码在该行，其中FileProvider.getUriForFile被称为..
private void dispatchTakePhoto() {
Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
startActivity(takePictureIntent); // this worked originally
if (takePictureIntent.resolveActivity(getPackageManager()) != null) {
File photoFile = null;
try {
photoFile = createImageFile();
} catch (IOException e) {
e.printStackTrace();
Log.e(TAG, ""+e);
}
if (photoFile != null) {
Uri photoURI = FileProvider.getUriForFile(TallyActivity2.this,
"com.example.bigdaddy.pipelinepipetally.fileprovider", photoFile);
takePictureIntent.setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT, photoURI);
startActivityForResult(takePictureIntent, REQUEST_IMAGE_CAPTURE);
}
}
}
时，使用该方法创建的图像文件
private File createImageFile() throws IOException {
/* Create an image file name */
String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss", Locale.getDefault()).format(new Date());
String imageFileName = "JPEG" + timeStamp + "_";
File storageDir = new File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES).getAbsoluteFile(), imageFileName);
File path = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES);
/* Tried this also, not working. Leaving for debugging.
File image = File.createTempFile(
imageFileName,
".jpg",
storageDir
);*/
File image = new File(path, imageFileName);
try {
/* Making sure the Pictures directory exist.*/
path.mkdir();
storageDir.createNewFile();
}catch (Exception e) {
e.printStackTrace();
}
/* Save a file: path for use with ACTION_VIEW intents */
mCurrentPhotoPath = "file:" + image.getAbsolutePath();
return image;
}
这里是onActivityResult()方法，我想用saveImage（）方法将拍摄的图像保存到类中，并将缩略图设置为ImageView。 saveImage（）方法返回一个字节，所以如果用户点击缩略图ImageView，我可以将一个Bundle中的字节通过一个Intent传递给另一个全屏活动，在那里它将被显示。
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
/* If it's equal to my REQUEST_IMAGE_CAPTURE var, we are all good. */
if (requestCode == REQUEST_IMAGE_CAPTURE && resultCode == RESULT_OK) {
Bundle extras = data.getExtras();
Bitmap imageBitmap = (Bitmap) extras.get("data");
/*Saving to the Pipe class with the saveImage() method below.*/
sDummyImagePicByte = saveImage(imageBitmap);
/* Going ahead an setting the thumbnail here for the picture taken*/
mPipePicImage.setImageBitmap(imageBitmap);
Log.i(TAG,Arrays.toString(sDummyImagePicByte)+" after assignment from saveImage()");
}
}
这里是Manifest.xml文件
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
package="com.example.bigdaddy.pipelinepipetally">
<uses-permission android:name="android.permission.READ_CONTACTS"/>
<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"
android:maxSdkVersion="18"/>
<uses-permission android:name="android.permission.CAMERA"/>
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
<uses-permission android:name="android.permission.ACCESS_LOCATION_EXTRA_COMMANDS"/>
<application
android:allowBackup="true"
android:debuggable="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:supportsRtl="true"
android:theme="@style/AppTheme"
tools:ignore="HardcodedDebugMode">
<activity
android:name=".MainActivity"
android:windowSoftInputMode="adjustResize">
<intent-filter>
<action android:name="android.intent.action.MAIN"/>
<category android:name="android.intent.category.LAUNCHER"/>
</intent-filter>
</activity>
<activity
android:name=".TallyActivity2"
android:windowSoftInputMode="adjustResize">
</activity>
<activity
android:name=".JobAndDbActivity"
android:windowSoftInputMode="adjustResize">
</activity>
<activity
android:name=".ExistingTallyActivity"
android:windowSoftInputMode="adjustResize">
</activity>
<activity android:name=".ImageToFullscreen"
android:windowSoftInputMode="adjustResize">
</activity>
<provider
android:name="android.support.v4.content.FileProvider"
android:authorities="com.example.bigdaddy.pipelinepipetally.fileprovider"
android:exported="false"
android:grantUriPermissions="true">
<meta-data
android:name="android.support.FILE_PROVIDER_PATHS"
android:resource="@xml/file_paths">
</meta-data>
</provider>
</application>
</manifest>
这里是我创建并把在app/RES/XML /文件夹（这也是我创建）file_paths.xml文件。不知道这是否是正确的位置（对于文件夹）。
<paths >
<files-path name="my_images" path="files/"/>
...
</paths>
而且这是onRequestPermissionsResult()
@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String permissions[],
@NonNull int[] grantResults) {
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
switch (requestCode) {
case MY_PERMISSIONS_REQUEST_CAMERA:
/* if request is canceled, the result arrays are empty */
if(grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED){
/* Permissions granted so the mPermissionIsGranted boolean is set to true*/
mPermissionIsGranted = true;
} else {
/*
Permissions denied so the mPermissionIsGranted boolean stays false here and
providing a Toast message to the user, letting them know that camera permissions
are required for this feature.
*/
Toast.makeText(getApplicationContext(),"Camera permissions required\nfor this" +
"feature.",
Toast.LENGTH_LONG).show();
/* Continuing to hold the false setting to this boolean since not granted.*/
mPermissionIsGranted = false;
}
break;
/* For accessing and writing to the SD card*/
case MY_PERMISSIONS_REQUEST_SD_CARD:
/* if request is canceled, the result arrays are empty */
if(grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED){
/* Permissions granted so the mPermissionIsGranted boolean is set to true*/
mPermissionIsGranted = true;
} else {
/*
Permissions denied so the mPermissionIsGranted boolean stays false here and
providing a Toast message to the user, letting them know that camera permissions
are required for this feature.
*/
Toast.makeText(getApplicationContext(),"SD Card permissions required\nfor this"+
"feature.",
Toast.LENGTH_LONG).show();
/* Continuing to hold the false setting to this boolean since not granted.*/
mPermissionIsGranted = false;
}
break;
/* For the GPS location permissions.*/
default: MY_PERMISSIONS_REQUEST_FINE_LOCATION:
/* Still to be implemented .*/
break;
}
}
我当然明白任何帮助。我还是个新手，学习Android。提前致谢。
感谢您的答复。所以XML文件中的文件路径指向内部文件存储？ – J2112O
@ J2112O：正确。请参阅[文档]（https://developer.android.com/reference/android/support/v4/content/FileProvider.html#SpecifyFiles）。 – CommonsWare
Hello @CommonsWare，所以@ J2112O需要将'