我直接从相机获取图像，画廊到我的应用程序中的图像视图一切正常。
现在我想要的是将此图像从Image View保存到应用程序目录，并在需要时访问它。
答案 0 :(得分：1)
//You Can try This
File myDir = new File(Environment.getExternalStorageDirectory().toString() + "/yourDirectoryname");
myDir.mkdirs();
File file = new File(myDir, yourImagePath);
if (file.exists()) file.delete();
try {
FileOutputStream out = new FileOutputStream(file);
imgBitmap.compress(Bitmap.CompressFormat.JPEG, 100, out);
out.flush();
out.close();
} catch (Exception e) {
e.printStackTrace();
}
答案 1 :(得分：0)
public class EditProfile extends AppCompatActivity {
ImageView imageView;
EditText Name,Email,MobileNo;
public static int count = 0;
String loginid;
Bitmap bitmap;
private static final int CAMERA_REQUEST = 1888;
String picturePath;
static int i=0;
private final int CAMERA_RESULT = 1;
private final String Tag = getClass().getName();
byte[] image = null;
Button button1;
static File out;
String path1;
ImageView imageView1;
Bitmap photo ;
byte[] b=null;
Button EditProfile;
String Username;
String name;
String email;
String Imgpath;
String Imgpath1;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_edit_profile);
EditProfile=(Button)findViewById(R.id.edit_profile);
Imgpath=getSharedPreferences("Bytearray",0).getString("Bytearray",null);
Imgpath1=getSharedPreferences("uri",0).getString("uri",null);
imageView=(ImageView)findViewById(R.id.profile_photo);
EditProfile.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
selectImage();
}
});
}
private void selectImage() {
final CharSequence[] options = { "Take Photo", "Choose from Gallery","Cancel" };
AlertDialog.Builder builder = new AlertDialog.Builder(EditProfile.this);
builder.setTitle("Add Photo!");
builder.setItems(options, new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int item) {
if (options[item].equals("Take Photo"))
{
PackageManager pm = getPackageManager();
if (pm.hasSystemFeature(PackageManager.FEATURE_CAMERA)) {
Intent i = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
i.putExtra(MediaStore.EXTRA_OUTPUT, MyFileContentProvider.CONTENT_URI);
startActivityForResult(i, CAMERA_RESULT);
} else {
Toast.makeText(getBaseContext(), "Camera is not available", Toast.LENGTH_LONG).show();
}
}
else if (options[item].equals("Choose from Gallery"))
{
Intent intent = new Intent(Intent.ACTION_PICK,android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
startActivityForResult(intent, 2);
}
else if (options[item].equals("Cancel")) {
dialog.dismiss();
}
}
});
builder.show();
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (resultCode == RESULT_OK && requestCode == CAMERA_RESULT) {
out = new File(getFilesDir(), "newImage.jpg");
if(!out.exists()) {
Toast.makeText(getBaseContext(),
"Error while capturing image", Toast.LENGTH_LONG)
.show();
return;
}
Bitmap mBitmap = BitmapFactory.decodeFile(out.getAbsolutePath());
String path=out.getAbsolutePath();
getSharedPreferences("path",0).edit().putString("path",path).commit();
imageView.setImageBitmap(mBitmap);
}
else if (requestCode == 2) {
imageView.setImageURI(selectedImage);
Uri selectedImage = data.getData();
String[] filePathColumn = { MediaStore.Images.Media.DATA };
Cursor cursor = getContentResolver().query(selectedImage,
filePathColumn, null, null, null);
cursor.moveToFirst();
int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
String filePath = cursor.getString(columnIndex);
cursor.close();
Bitmap yourSelectedImage = BitmapFactory.decodeFile(filePath);
// imageView.setImageBitmap(yourSelectedImage);
ByteArrayOutputStream stream = new ByteArrayOutputStream();
yourSelectedImage.compress(Bitmap.CompressFormat.PNG, 100, stream);
byte[] byteArray = stream.toByteArray();
Bitmap image=BitmapFactory.decodeByteArray(byteArray,0,byteArray.length);
imageView.setImageBitmap(image);
}
}
}
答案 2 :(得分：0)
通过创建已知路径的文件来启动相机意图，并在图像捕获后，您的图像显示在该路径中：
Uri capturedImageUri;//global variable
private void initiateImageCapture() {
Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
if (takePictureIntent.resolveActivity(getActivity().getPackageManager()) != null) {
File photoFile = null;
try {
photoFile = createImageFile();
capturedImageUri = Uri.fromFile(photoFile);
} catch (IOException e) {
e.printStackTrace();
}
if (photoFile == null || capturedImageUri == null) {
Utils.showLongToast(getActivity(), "error");
} else {
takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT, capturedImageUri);
if (takePictureIntent.resolveActivity(getActivity().getPackageManager()) != null)
startActivityForResult(takePictureIntent, Constants.INTENT_IMAGE_CAPTURE);
else
Utils.showLongToast(getActivity(), "try again);
}
}
}
private File createImageFile() throws IOException {
String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss")
.format(new Date());
String imageFileName = "JPEG_" + timeStamp + "_";
File storageDir = Environment
.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES);
File image = File.createTempFile(imageFileName, /* prefix */
".jpg", /* suffix */
storageDir /* directory */
);
return image;
}