从图库中获取图像并转换为 base64 问题 [英] Take image from gallery and convert to base64 issue
本文介绍了从图库中获取图像并转换为 base64 问题的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
抱歉问了一个愚蠢的问题.但它解决了我的问题.请帮助我在stackoverflow上尝试了所有代码并遵循其他教程，但它根本没有帮助.我正在从galary获取图像并转换为base64它工作得很好在相机上拍照时，但为什么它在 galary 上不起作用，我不知道请帮助我.;(
sorry for asking silly question.but it solved yet my me.please help i had tried all codes on stackoverflow and follow other tutorial but it wont help at all.i am taking image from galary and convert to base64 it works perfectly fine when taking image on camera but why it dont work on galary i dont know please help me.;(
这是选择图片的代码
private void selectImage() {
final CharSequence[] items = { "Take Photo", "Choose from Library",
"Cancel" };
AlertDialog.Builder builder = new AlertDialog.Builder(TestFragment.this);
builder.setTitle("Add Photo!");
builder.setItems(items, new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int item) {
boolean result= Utility.checkPermission(TestFragment.this);
if (items[item].equals("Take Photo")) {
userChoosenTask ="Take Photo";
if(result)
cameraIntent();
} else if (items[item].equals("Choose from Library")) {
userChoosenTask ="Choose from Library";
if(result)
galleryIntent();
} else if (items[item].equals("Cancel")) {
dialog.dismiss();
}
}
});
builder.show();
}
之后
private void galleryIntent()
{
Intent intent = new Intent();
intent.setType("image/*");
intent.setAction(Intent.ACTION_GET_CONTENT);//
startActivityForResult(Intent.createChooser(intent, "Select File"),SELECT_FILE);
}
private void cameraIntent()
{
Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
startActivityForResult(intent, REQUEST_CAMERA);
}
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (resultCode == Activity.RESULT_OK) {
if (requestCode == SELECT_FILE)
onSelectFromGalleryResult(data);
else if (requestCode == REQUEST_CAMERA)
onCaptureImageResult(data);
}
}
private void onCaptureImageResult(Intent data) {
bitmap = (Bitmap) data.getExtras().get("data");
ByteArrayOutputStream bytes = new ByteArrayOutputStream();
bitmap.compress(Bitmap.CompressFormat.JPEG, 90, bytes);
File destination = new File(Environment.getExternalStorageDirectory(),
System.currentTimeMillis() + ".jpg");
FileOutputStream fo;
try {
destination.createNewFile();
fo = new FileOutputStream(destination);
fo.write(bytes.toByteArray());
fo.close();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
imgvcomp.setImageBitmap(bitmap);
String img=getStringImage(bitmap);
Log.v(TAG,"base64"+img);//perfectly string base64 to image
}
@SuppressWarnings("deprecation")
private void onSelectFromGalleryResult(Intent data) {
if (data != null) {
try {
bitmap = MediaStore.Images.Media.getBitmap(getApplicationContext().getContentResolver(), data.getData());
} catch (IOException e) {
e.printStackTrace();
}
}
imgvcomp.setImageBitmap(bitmap);
String img=getStringImage(bitmap);
Log.v(TAG,"base64"+img);//checking in log base64 string to image cropeed image found
}
public String getStringImage(Bitmap bmp){
ByteArrayOutputStream baos = new ByteArrayOutputStream();
bmp.compress(Bitmap.CompressFormat.JPEG, 90, baos);
byte[] imageBytes = baos.toByteArray();
String encodedImage = Base64.encodeToString(imageBytes, Base64.DEFAULT);
return encodedImage;
}
private void showToastMessage(String message) {
Log.v(TAG, String.format("showToastMessage :: message = %s", message));
// Toast.makeText(getApplicationContext(), message, Toast.LENGTH_LONG).show();
}
为什么我从galary中选择后发现裁剪的图像?错误日志中没有错误这里是logcat
why i found the cropped image after selecting from galary?there is no error in error log here is the logcat
E/DynamiteModule: Failed to load module descriptor class: Didn't find class "com.google.android.gms.dynamite.descriptors.com.google.firebase.auth.ModuleDescriptor" on path: DexPathList[[zip file "/data/app/
W/FlurryAgent: Flurry session paused for
1 and remote module com.google.android.gms.tagmanager:8
Selected remote version of com.google.android.gms.tagmanager, version >= 8
No container asset found in /assets/containers. Checking top level /assets directory for container assets.
Tag Manager's event handler WILL NOT be installed (no container loaded)
Tag Manager initilization took 274ms
Using measurement service
Connecting to remote service
Connected to remote service
Processing queued up service tasks: 1
Suspending all threads took: 25.809ms
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推荐答案
您可以使用以下代码:
public static String encodeTobase64(Bitmap image) {
Bitmap immagex=image;
ByteArrayOutputStream baos = new ByteArrayOutputStream();
immagex.compress(Bitmap.CompressFormat.JPEG, 100, baos);
byte[] b = baos.toByteArray();
String imageEncoded = Base64.encodeToString(b,Base64.DEFAULT);
Log.e("LOOK", imageEncoded);
return imageEncoded;
}
在 onActivityResult() 中使用以下代码
Use below code in onActivityResult()
InputStream imageStream = null;
try {
imageStream = this.getContentResolver().openInputStream(selectedImage);
} catch (FileNotFoundException e) {
e.printStackTrace();
}
Bitmap yourSelectedImage = BitmapFactory.decodeStream(imageStream);
encodeTobase64(yourSelectedImage);
这篇关于从图库中获取图像并转换为 base64 问题的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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