Android执行的裁剪图像无法正常工作 [英] android- performing crop image is not working properly
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问题描述
我正在使用android裁剪图像,这是我的裁剪图像代码:
I'm working with android crop image , this is my code for cropping image :
private void performCrop() {
try {
Intent cropIntent = new Intent("com.android.camera.action.CROP");
//indicate image type and Uri
cropIntent.setDataAndType(picUri, "image/*");
//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", 500);
cropIntent.putExtra("outputY", 500);
//retrieve data on return
cropIntent.putExtra("return-data", true);
//start the activity - we handle returning in onActivityResult
startActivityForResult(cropIntent, PIC_CROP);
} catch (ActivityNotFoundException anfe) {
//display an error message
String errorMessage = "err";
Toast toast = Toast.makeText(this, errorMessage, Toast.LENGTH_SHORT);
toast.show();
}
}
我已经在android 4.2、4.3上测试了这段代码,这没问题,但是在android 5,6上,它返回空指针异常,我也不知道为什么.
I have tested this code on android 4.2 , 4.3 and the was no problem , but on android 5,6 , it's returning null pointer exception and I don't know why .
此代码有什么问题?如何使它与所有版本的android兼容?
what is wrong with this code ? how can I make it compatible with all version of android ?
推荐答案
You can use according to Build SDK
if (android.os.Build.VERSION.SDK_INT <= Build.VERSION_CODES.LOLLIPOP) {
performCrop(fileUri);
} else {
performCropImage(fileUri);
}
// code for device below 5
private boolean performCropImage(Uri mFinalImageUri) {
Uri mCropImagedUri;
try {
if (mFinalImageUri != null) {
//call the standard crop action intent (the user device may not support it)
Intent cropIntent = new Intent("com.android.camera.action.CROP");
//indicate image type and Uri
cropIntent.setDataAndType(mFinalImageUri, "image/*");
//set crop properties
cropIntent.putExtra("crop", "true");
//indicate aspect of desired crop
cropIntent.putExtra("aspectX", 1);
cropIntent.putExtra("aspectY", 1);
cropIntent.putExtra("scale", true);
// cropIntent.p
//indicate output X and Y
cropIntent.putExtra("outputX", 200);
cropIntent.putExtra("outputY", 200);
//retrieve data on return
cropIntent.putExtra("return-data", false);
File f = createNewFile("CROP_");
try {
f.createNewFile();
} catch (IOException ex) {
Log.e("io", ex.getMessage());
}
mCropImagedUri = Uri.fromFile(f);
cropIntent.putExtra(MediaStore.EXTRA_OUTPUT, mCropImagedUri);
//start the activity - we handle returning in onActivityResult
startActivityForResult(cropIntent, PIC_CROP);
return true;
}
} catch (ActivityNotFoundException anfe) {
//display an error message
String errorMessage = getString(R.string.crop_not_supported);
Toast toast = Toast.makeText(this, errorMessage, Toast.LENGTH_SHORT);
toast.show();
return false;
}
return false;
}
// code for 5 or 6
private void performCrop(Uri picUri) {
try {
Intent cropIntent = new Intent("com.android.camera.action.CROP");
// indicate image type and Uri
cropIntent.setDataAndType(picUri, "image/*");
// 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", 200);
cropIntent.putExtra("outputY", 200);
// retrieve data on return
cropIntent.putExtra("return-data", true);
// start the activity - we handle returning in onActivityResult
startActivityForResult(cropIntent, PIC_CROP);
}
// respond to users whose devices do not support the crop action
catch (ActivityNotFoundException anfe) {
// display an error message
String errorMessage = getString(R.string.crop_not_supported);
Toast toast = Toast.makeText(this, errorMessage, Toast.LENGTH_SHORT);
toast.show();
}
}
On ActivityResult put this code
Uri imageUri = data.getData();
try {
Bitmap selectedBitmap;
if (android.os.Build.VERSION.SDK_INT <= Build.VERSION_CODES.LOLLIPOP) {
Bundle extras = data.getExtras();
selectedBitmap = extras.getParcelable("data");
} else {
selectedBitmap = MediaStore.Images.Media.getBitmap(this.getContentResolver(), imageUri);
}
// I hope you this code help you
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