我在Android版 Nougat 的情况下遇到以下错误，捕获图像并在imageview中显示但它在marshmallow中工作。我创建了 Fileprovider 路径牛轧糖是必需的。
下面是相机和裁剪的代码。
camera.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
dialogBuilder.dismiss();
Intent intent = new Intent("android.media.action.IMAGE_CAPTURE");
/* File file = new File(Environment.getExternalStorageDirectory() + File.separator + "img.jpg");
intent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(file));
startActivityForResult(intent, 100);*/
file = new File(UploadIdActivtiy.this.getExternalCacheDir(),
String.valueOf(System.currentTimeMillis()) + ".jpg");
if (Build.VERSION.SDK_INT >= 24) {
uri = FileProvider.getUriForFile(UploadIdActivtiy.this,
BuildConfig.APPLICATION_ID + ".provider",
file);
}else{
uri = Uri.fromFile(file);
}
Log.d("camerapath==", uri.getPath());
intent.putExtra(MediaStore.EXTRA_OUTPUT, uri);
intent.setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
intent.setFlags(Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
startActivityForResult(intent, 100);
}
});
//裁剪捕获的图像
private void performCrop() {
try {
UploadIdActivtiy.this.grantUriPermission("com.activatic.paychek",uri, Intent.FLAG_GRANT_WRITE_URI_PERMISSION | Intent.FLAG_GRANT_READ_URI_PERMISSION);
UploadIdActivtiy.this.revokeUriPermission(uri, Intent.FLAG_GRANT_WRITE_URI_PERMISSION | Intent.FLAG_GRANT_READ_URI_PERMISSION);
Intent cropIntent = new Intent("com.android.camera.action.CROP");
//indicate image type and Uri
cropIntent.setDataAndType(uri, "image/*");
cropIntent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
cropIntent.addFlags(Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
//set crop properties
cropIntent.putExtra("crop", "true");
//indicate aspect of desired crop
cropIntent.putExtra("aspectX", 1);
cropIntent.putExtra("aspectY", 1);
//indicate output X and Y
cropIntent.putExtra("outputX", 256);
cropIntent.putExtra("outputY", 256);
cropIntent.putExtra("outputFormat", "JPEG");
cropIntent.putExtra("noFaceDetection", true);
//retrieve data on return
cropIntent.putExtra("return-data", true);
if (Build.VERSION.SDK_INT >= 24) {
uri = FileProvider.getUriForFile(UploadIdActivtiy.this,
BuildConfig.APPLICATION_ID + ".provider", createCropFile());
} else
uri = Uri.fromFile(createCropFile());
//start the activity - we handle returning in onActivityResult
cropIntent.putExtra(MediaStore.EXTRA_OUTPUT, uri);
startActivityForResult(cropIntent, PIC_CROP);
} catch (ActivityNotFoundException anfe) {
//display an error message
String errorMessage = "Whoops - your device doesn't support the crop action!";
Toast toast = Toast.makeText(getApplicationContext(), errorMessage, Toast.LENGTH_SHORT);
toast.show();
}
}
// createcropfile function
private File createCropFile() {
File storageDir = UploadIdActivtiy.this.getExternalFilesDir(Environment.DIRECTORY_PICTURES);
String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date());
// path = path + (timeStamp + "1jpg");
try {
file = File.createTempFile(timeStamp, ".jpg", storageDir);
} catch (IOException e) {
e.printStackTrace();
}
if (Build.VERSION.SDK_INT >= 24)
mCurrentPhotoPath = String.valueOf(FileProvider.getUriForFile(UploadIdActivtiy.this,
BuildConfig.APPLICATION_ID + ".provider", file));
else
mCurrentPhotoPath = String.valueOf(Uri.fromFile(file));
return file;
}
// OnActivtiy结果
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (resultCode == -1) {
if (requestCode == 100 ) {
Log.e("Exception 100","resultCode >> "+resultCode);
File file = new File(Environment.getExternalStorageDirectory()+File.separator + "img.jpg");
Log.d("showimgfile","==="+file);
Log.d("shosimg","%%=="+Uri.fromFile(file));
try{
Log.d("shosimg","%%=="+file);
Log.d("shosimg","%%=="+Uri.fromFile(file));
//ImageCropFunction(Uri.fromFile(file));
// uri = data.getData();
performCrop();
}catch (ActivityNotFoundException aNEF){
String errorMessage = "Sorry - your device doesn't support the crop action!";
Toast toast = Toast.makeText(getApplicationContext(), errorMessage, Toast.LENGTH_SHORT);
toast.show();
}
}
else if (requestCode == 10) {
Log.d("Exception 10", "resultCode >> " + resultCode);
uri = data.getData();
performCrop();
}
else if(requestCode == PIC_CROP){
Log.d("imavalue==",""+img);
if(img==200)
{
Bundle extras = data.getExtras();
thePic_imgone = extras.getParcelable("data");
CheckCount_imgone = 1;
BitmapDrawable background = new BitmapDrawable(thePic_imgone);
llFront.setBackgroundDrawable(background);
iv_front.setVisibility(View.GONE);
txt_front.setVisibility(View.GONE);
//iv_front.setImageBitmap(thePic_imgone);
}
if(img==300)
{
Bundle extras = data.getExtras();
thePic_imgtwo = extras.getParcelable("data");
CheckCount_imgtwo = 2;
BitmapDrawable background = new BitmapDrawable(thePic_imgtwo);
llBack.setBackgroundDrawable(background);
ivbackimage.setVisibility(View.GONE);
txt_back.setVisibility(View.GONE);
//ivbackimage.setImageBitmap(thePic_imgtwo);
}
}
}else{
Log.e("Exception", "resultCode >> " + resultCode);
}
}
//我面临的错误
java.lang.SecurityException: Permission Denial: writing android.support.v4.content.FileProvider uri content://com.activatic.paychek.provider/external_files/Android/data/com.activatic.paychek/files/Pictures/20180323_103545290646785.jpg from pid=16668, uid=10046 requires the provider be exported, or grantUriPermission()
at android.content.ContentProvider.enforceWritePermissionInner(ContentProvider.java:682)
at android.content.ContentProvider$Transport.enforceWritePermission(ContentProvider.java:497)
at android.content.ContentProvider$Transport.enforceFilePermission(ContentProvider.java:469)
at android.content.ContentProvider$Transport.openAssetFile(ContentProvider.java:384)
at android.content.ContentProviderNative.onTransact(ContentProviderNative.java:262)
at android.os.Binder.execTransact(Binder.java:565)
答案 0 :(得分：0)
你在清单中添加了吗？只需在清单文件中添加它
<provider
android:name="android.support.v4.content.FileProvider"
android:authorities="${applicationId}.provider"
android:exported="false"
android:grantUriPermissions="true">
<meta-data
android:name="android.support.FILE_PROVIDER_PATHS"
android:resource="@xml/provider_paths"/>
</provider>
，您的provider_path.xml就像
<?xml version="1.0" encoding="utf-8"?><paths xmlns:android="http://schemas.android.com/apk/res/android">