图像裁剪在Android7.0中不起作用

Question

当我裁剪图像时，应用程序在Android7.0中崩溃了。

异常：02-06 12:40:53.717 567 1-5685/com.tribyte.itutor2 E/databaseutils：将异常写入包java.lang.securityException：拒绝权限：写入android.support.v4.content.fileProvider uri内容：

示例代码：

private void performCrop()
{
try 
{
Intent intent = new Intent("com.android.camera.action.CROP");
List<ResolveInfo> resInfoList = this.getPackageManager().queryIntentActivities(intent, PackageManager.MATCH_DEFAULT_ONLY);
for (ResolveInfo resolveInfo : resInfoList) {
String packageName = resolveInfo.activityInfo.packageName;
this.grantUriPermission(packageName, temppicUri, Intent.FLAG_GRANT_WRITE_URI_PERMISSION | Intent.FLAG_GRANT_READ_URI_PERMISSION);
}

String extension = android.webkit.MimeTypeMap.getFileExtensionFromUrl(picUri.toString());
String mimetype = android.webkit.MimeTypeMap.getSingleton().getMimeTypeFromExtension(extension);

intent.setDataAndType(picUri,mimetype);
intent.addFlags(Intent.FLAG_GRANT_WRITE_URI_PERMISSION | Intent.FLAG_GRANT_READ_URI_PERMISSION);
intent.putExtra("crop", "true");
intent.putExtra(MediaStore.EXTRA_OUTPUT, temppicUri);
intent.putExtra("outputX", 512);
intent.putExtra("outputY", 512);
intent.putExtra("aspectX", 0);
intent.putExtra("aspectY", 0);
//start the activity - we handle returning in onActivityResult
if (intent.resolveActivity(getPackageManager()) != null) 
{
intent.putExtra("return-data", true);   
startActivityForResult(intent, PIC_CROP);
}
}
catch(ActivityNotFoundException anfe)
{
//display an error message
String errorMessage = "Whoops - your device doesn't support the crop action!";
Toast toast = Toast.makeText(this, errorMessage, Toast.LENGTH_SHORT);
toast.show();
}    
}

Answer 1

根据我有限的经验,我认为它是由OOM引起的。代码如下所示,

intent.putExtra（“outputx”,512）；intent.putExtra（“outputy”，512)；

512*512的尺寸在屏幕分辨率更大的更高品质设备中显得太大了。如果图像很大，可以减小图像的大小。