从相机拍照，压缩并存储在我指定的位置
Take a picture from camera, compress it and store in location which i specific
我想用相机拍一张照片压缩后存入我创建的路径。
我现在所做的是单击图片并将原始图片存储在我的路径中，但我想在存储之前对其进行压缩，以便我可以检索压缩图像的路径。
为了保存原始图像，我创建了自己的路径并将其存储在变量 mCurrentPhotoPath.
中
主要是我想要它的存储路径。
请帮忙。提前致谢。
package com.howaboutthis.satyaraj.videntify;
import android.Manifest;
import android.annotation.SuppressLint;
import android.content.Intent;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.provider.MediaStore;
import android.support.annotation.NonNull;
import android.support.v4.content.FileProvider;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;
import com.google.firebase.auth.FirebaseAuth;
import java.io.File;
import java.io.IOException;
import java.net.URI;
import java.text.SimpleDateFormat;
import java.util.Date;
public class IdentifyActivity extends AppCompatActivity implements View.OnClickListener {
private static final int PICK_IMAGE_REQUEST = 1;
private static final int REQUEST_TAKE_PHOTO = 200;
private static final int CLICK_IMAGE_REQUEST = 2;
private static final String TAG = "IdentifyActivity";
private RequestPermissionHandler mRequestPermissionHandler;
String mCurrentPhotoPath;
String userName;
String userEmail;
Uri profileURL;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_identify);
mRequestPermissionHandler = new RequestPermissionHandler();
Bundle bundle = getIntent().getExtras();
assert bundle != null;
userName = bundle.getString("username");
Button cameraButton = findViewById(R.id.camera);
Button galleryButton = findViewById(R.id.gallery);
cameraButton.setOnClickListener(this);
galleryButton.setOnClickListener(this);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_profile) {
Intent intent = new Intent(IdentifyActivity.this, ProfileActivity.class);
intent.putExtra("username", userName);
intent.putExtra("user_email", userEmail);
intent.putExtra("profile_url",profileURL);
startActivity(intent);
}
else if (id == R.id.action_about)
return true;
return super.onOptionsItemSelected(item);
}
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.camera:
takePicture();
break;
case R.id.gallery:
pickFromGallery();
break;
}
}
private void pickFromGallery() {
String[] PERMISSIONS = {Manifest.permission.WRITE_EXTERNAL_STORAGE, Manifest.permission.CAMERA};
mRequestPermissionHandler.requestPermission(this, PERMISSIONS, REQUEST_TAKE_PHOTO, new RequestPermissionHandler.RequestPermissionListener() {
@Override
public void onSuccess() {
Intent intent = new Intent(Intent.ACTION_PICK, android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
intent.setType("image/*");
startActivityForResult(intent, PICK_IMAGE_REQUEST);
}
@Override
public void onFailed() {
Toast.makeText(IdentifyActivity.this, "Request permission failed", Toast.LENGTH_SHORT).show();
}
});
}
private void takePicture() {
String[] PERMISSIONS = {Manifest.permission.WRITE_EXTERNAL_STORAGE, Manifest.permission.CAMERA, Manifest.permission.READ_EXTERNAL_STORAGE};
mRequestPermissionHandler.requestPermission(this, PERMISSIONS, REQUEST_TAKE_PHOTO, new RequestPermissionHandler.RequestPermissionListener() {
@Override
public void onSuccess() {
dispatchTakePictureIntent();
}
@Override
public void onFailed() {
Toast.makeText(IdentifyActivity.this, "Request permission failed", Toast.LENGTH_SHORT).show();
}
});
}
@Override
public void onBackPressed() {
super.onBackPressed();
Intent intent = new Intent(Intent.ACTION_MAIN);
intent.addCategory(Intent.CATEGORY_HOME);
intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
startActivity(intent);
finish();
System.exit(0);
}
@Override
protected void onDestroy() {
super.onDestroy();
finish();
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == PICK_IMAGE_REQUEST && resultCode == RESULT_OK && data != null && data.getData() != null) {
Uri uri = data.getData();
File finalFile = new File(getRealPathFromURI(uri));
Intent intent = new Intent(IdentifyActivity.this, detailedActivity.class);
intent.putExtra("PATH", finalFile.getPath());
startActivity(intent);
} else if (requestCode == CLICK_IMAGE_REQUEST && resultCode == RESULT_OK) {
galleryAddPic();
Intent intent = new Intent(IdentifyActivity.this, detailedActivity.class);
intent.putExtra("PATH", mCurrentPhotoPath);
startActivity(intent);
}
}
@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String permissions[], @NonNull int[] grantResults) {
mRequestPermissionHandler.onRequestPermissionsResult(requestCode, permissions,
grantResults);
}
public String getRealPathFromURI(Uri uri) {
String[] filePathColumn = {MediaStore.Images.Media.DATA};
Cursor cursor = getContentResolver().query(uri, filePathColumn, null, null, null);
String picturePath = null;
if (cursor != null) {
cursor.moveToFirst();
int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
picturePath = cursor.getString(columnIndex);
cursor.close();
}
return picturePath;
}
//Creating a path for the captured image to be saved. Using this path we can retrieve the original Image.
private File createImageFile() throws IOException {
// Create an image file name
@SuppressLint("SimpleDateFormat") String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date());
String imageFileName = "JPEG_" + timeStamp + "_";
File storageDir = getExternalFilesDir(Environment.DIRECTORY_PICTURES);
File image = File.createTempFile(
imageFileName, /* prefix */
".jpg", /* suffix */
storageDir /* directory */
);
// Save a file: path for use with ACTION_VIEW intents
mCurrentPhotoPath = image.getAbsolutePath();
return image;
}
private void dispatchTakePictureIntent() {
Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
// Ensure that there's a camera activity to handle the intent
if (takePictureIntent.resolveActivity(getPackageManager()) != null) {
// Create the File where the photo should go
File photoFile = null;
try {
photoFile = createImageFile();
} catch (IOException ex) {
Log.e(TAG,"Error while creating the file");
// Error occurred while creating the File
}
// Continue only if the File was successfully created
if (photoFile != null) {
Uri photoURI = FileProvider.getUriForFile(this,
"com.howaboutthis.satyaraj.fileprovider",
photoFile);
takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT, photoURI);
startActivityForResult(takePictureIntent, CLICK_IMAGE_REQUEST);
}
}
}
// Adding the pic to the gallery so that it is visible to everyone
private void galleryAddPic() {
Intent mediaScanIntent = new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE);
File f = new File(mCurrentPhotoPath);
Uri contentUri = Uri.fromFile(f);
mediaScanIntent.setData(contentUri);
this.sendBroadcast(mediaScanIntent);
}
}
简单读取load并保存
final BitmapFactory.Options options = new BitmapFactory.Options();
options.inJustDecodeBounds = true;
options.inSampleSize = 2; //you can also calculate your inSampleSize
options.inJustDecodeBounds = false;
options.inTempStorage = new byte[16 * 1024];
options.inPreferredConfig = Bitmap.Config.ARGB_8888;
Bitmap bmp= BitmapFactory.decodeFile(photoPath, options);
FileOutputStream out = null;
try {
out = new FileOutputStream(photoPath);
bmp.compress(Bitmap.CompressFormat.PNG, 100, out); // bmp is your Bitmap instance
// PNG is a lossless format, the compression factor (100) is ignored
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
if (out != null) {
out.close();
}
} catch (IOException e) {
e.printStackTrace();
}
}
如果你想要一个非常小的图像，那么你还必须更改它的分辨率
public String compressImage(String imagePath) {
位图 scaledBitmap = null;
BitmapFactory.Options options = new BitmapFactory.Options();
options.inJustDecodeBounds = true;
Bitmap bmp = BitmapFactory.decodeFile(imagePath, options);
int actualHeight = options.outHeight;
int actualWidth = options.outWidth;
float imgRatio = (float) actualWidth / (float) actualHeight;
float maxRatio = maxWidth / maxHeight;
if (actualHeight > maxHeight || actualWidth > maxWidth) {
if (imgRatio < maxRatio) {
imgRatio = maxHeight / actualHeight;
actualWidth = (int) (imgRatio * actualWidth);
actualHeight = (int) maxHeight;
} else if (imgRatio > maxRatio) {
imgRatio = maxWidth / actualWidth;
actualHeight = (int) (imgRatio * actualHeight);
actualWidth = (int) maxWidth;
} else {
actualHeight = (int) maxHeight;
actualWidth = (int) maxWidth;
}
}
options.inSampleSize = calculateInSampleSize(options, actualWidth, actualHeight);
options.inJustDecodeBounds = false;
options.inDither = false;
options.inPurgeable = true;
options.inInputShareable = true;
options.inTempStorage = new byte[16 * 1024];
try {
bmp = BitmapFactory.decodeFile(imagePath, options);
} catch (OutOfMemoryError exception) {
exception.printStackTrace();
}
try {
scaledBitmap = Bitmap.createBitmap(actualWidth, actualHeight, Bitmap.Config.RGB_565);
} catch (OutOfMemoryError exception) {
exception.printStackTrace();
}
float ratioX = actualWidth / (float) options.outWidth;
float ratioY = actualHeight / (float) options.outHeight;
float middleX = actualWidth / 2.0f;
float middleY = actualHeight / 2.0f;
Matrix scaleMatrix = new Matrix();
scaleMatrix.setScale(ratioX, ratioY, middleX, middleY);
Canvas canvas = new Canvas(scaledBitmap);
canvas.setMatrix(scaleMatrix);
canvas.drawBitmap(bmp, middleX - bmp.getWidth() / 2, middleY - bmp.getHeight() / 2, new Paint(Paint.FILTER_BITMAP_FLAG));
if(bmp!=null)
{
bmp.recycle();
}
ExifInterface exif;
try {
exif = new ExifInterface(imagePath);
int orientation = exif.getAttributeInt(ExifInterface.TAG_ORIENTATION, 0);
Matrix matrix = new Matrix();
if (orientation == 6) {
matrix.postRotate(90);
} else if (orientation == 3) {
matrix.postRotate(180);
} else if (orientation == 8) {
matrix.postRotate(270);
}
scaledBitmap = Bitmap.createBitmap(scaledBitmap, 0, 0, scaledBitmap.getWidth(), scaledBitmap.getHeight(), matrix, true);
} catch (IOException e) {
e.printStackTrace();
}
FileOutputStream out = null;
String filepath = getFilename();
try {
out = new FileOutputStream(filepath);
//write the compressed bitmap at the destination specified by filename.
scaledBitmap.compress(Bitmap.CompressFormat.JPEG, 80, out);
} catch (FileNotFoundException e) {
e.printStackTrace();
}
return filepath;
}
public static int calculateInSampleSize(BitmapFactory.Options options, int reqWidth, int reqHeight) {
final int height = options.outHeight;
final int width = options.outWidth;
int inSampleSize = 1;
if (height > reqHeight || width > reqWidth) {
final int heightRatio = Math.round((float) height / (float) reqHeight);
final int widthRatio = Math.round((float) width / (float) reqWidth);
inSampleSize = heightRatio < widthRatio ? heightRatio : widthRatio;
}
final float totalPixels = width * height;
final float totalReqPixelsCap = reqWidth * reqHeight * 2;
while (totalPixels / (inSampleSize * inSampleSize) > totalReqPixelsCap) {
inSampleSize++;
}
return inSampleSize;
}
我想用相机拍一张照片压缩后存入我创建的路径。 我现在所做的是单击图片并将原始图片存储在我的路径中，但我想在存储之前对其进行压缩，以便我可以检索压缩图像的路径。
为了保存原始图像，我创建了自己的路径并将其存储在变量 mCurrentPhotoPath.
中主要是我想要它的存储路径。 请帮忙。提前致谢。
package com.howaboutthis.satyaraj.videntify;
import android.Manifest;
import android.annotation.SuppressLint;
import android.content.Intent;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.provider.MediaStore;
import android.support.annotation.NonNull;
import android.support.v4.content.FileProvider;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;
import com.google.firebase.auth.FirebaseAuth;
import java.io.File;
import java.io.IOException;
import java.net.URI;
import java.text.SimpleDateFormat;
import java.util.Date;
public class IdentifyActivity extends AppCompatActivity implements View.OnClickListener {
private static final int PICK_IMAGE_REQUEST = 1;
private static final int REQUEST_TAKE_PHOTO = 200;
private static final int CLICK_IMAGE_REQUEST = 2;
private static final String TAG = "IdentifyActivity";
private RequestPermissionHandler mRequestPermissionHandler;
String mCurrentPhotoPath;
String userName;
String userEmail;
Uri profileURL;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_identify);
mRequestPermissionHandler = new RequestPermissionHandler();
Bundle bundle = getIntent().getExtras();
assert bundle != null;
userName = bundle.getString("username");
Button cameraButton = findViewById(R.id.camera);
Button galleryButton = findViewById(R.id.gallery);
cameraButton.setOnClickListener(this);
galleryButton.setOnClickListener(this);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_profile) {
Intent intent = new Intent(IdentifyActivity.this, ProfileActivity.class);
intent.putExtra("username", userName);
intent.putExtra("user_email", userEmail);
intent.putExtra("profile_url",profileURL);
startActivity(intent);
}
else if (id == R.id.action_about)
return true;
return super.onOptionsItemSelected(item);
}
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.camera:
takePicture();
break;
case R.id.gallery:
pickFromGallery();
break;
}
}
private void pickFromGallery() {
String[] PERMISSIONS = {Manifest.permission.WRITE_EXTERNAL_STORAGE, Manifest.permission.CAMERA};
mRequestPermissionHandler.requestPermission(this, PERMISSIONS, REQUEST_TAKE_PHOTO, new RequestPermissionHandler.RequestPermissionListener() {
@Override
public void onSuccess() {
Intent intent = new Intent(Intent.ACTION_PICK, android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
intent.setType("image/*");
startActivityForResult(intent, PICK_IMAGE_REQUEST);
}
@Override
public void onFailed() {
Toast.makeText(IdentifyActivity.this, "Request permission failed", Toast.LENGTH_SHORT).show();
}
});
}
private void takePicture() {
String[] PERMISSIONS = {Manifest.permission.WRITE_EXTERNAL_STORAGE, Manifest.permission.CAMERA, Manifest.permission.READ_EXTERNAL_STORAGE};
mRequestPermissionHandler.requestPermission(this, PERMISSIONS, REQUEST_TAKE_PHOTO, new RequestPermissionHandler.RequestPermissionListener() {
@Override
public void onSuccess() {
dispatchTakePictureIntent();
}
@Override
public void onFailed() {
Toast.makeText(IdentifyActivity.this, "Request permission failed", Toast.LENGTH_SHORT).show();
}
});
}
@Override
public void onBackPressed() {
super.onBackPressed();
Intent intent = new Intent(Intent.ACTION_MAIN);
intent.addCategory(Intent.CATEGORY_HOME);
intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
startActivity(intent);
finish();
System.exit(0);
}
@Override
protected void onDestroy() {
super.onDestroy();
finish();
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == PICK_IMAGE_REQUEST && resultCode == RESULT_OK && data != null && data.getData() != null) {
Uri uri = data.getData();
File finalFile = new File(getRealPathFromURI(uri));
Intent intent = new Intent(IdentifyActivity.this, detailedActivity.class);
intent.putExtra("PATH", finalFile.getPath());
startActivity(intent);
} else if (requestCode == CLICK_IMAGE_REQUEST && resultCode == RESULT_OK) {
galleryAddPic();
Intent intent = new Intent(IdentifyActivity.this, detailedActivity.class);
intent.putExtra("PATH", mCurrentPhotoPath);
startActivity(intent);
}
}
@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String permissions[], @NonNull int[] grantResults) {
mRequestPermissionHandler.onRequestPermissionsResult(requestCode, permissions,
grantResults);
}
public String getRealPathFromURI(Uri uri) {
String[] filePathColumn = {MediaStore.Images.Media.DATA};
Cursor cursor = getContentResolver().query(uri, filePathColumn, null, null, null);
String picturePath = null;
if (cursor != null) {
cursor.moveToFirst();
int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
picturePath = cursor.getString(columnIndex);
cursor.close();
}
return picturePath;
}
//Creating a path for the captured image to be saved. Using this path we can retrieve the original Image.
private File createImageFile() throws IOException {
// Create an image file name
@SuppressLint("SimpleDateFormat") String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date());
String imageFileName = "JPEG_" + timeStamp + "_";
File storageDir = getExternalFilesDir(Environment.DIRECTORY_PICTURES);
File image = File.createTempFile(
imageFileName, /* prefix */
".jpg", /* suffix */
storageDir /* directory */
);
// Save a file: path for use with ACTION_VIEW intents
mCurrentPhotoPath = image.getAbsolutePath();
return image;
}
private void dispatchTakePictureIntent() {
Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
// Ensure that there's a camera activity to handle the intent
if (takePictureIntent.resolveActivity(getPackageManager()) != null) {
// Create the File where the photo should go
File photoFile = null;
try {
photoFile = createImageFile();
} catch (IOException ex) {
Log.e(TAG,"Error while creating the file");
// Error occurred while creating the File
}
// Continue only if the File was successfully created
if (photoFile != null) {
Uri photoURI = FileProvider.getUriForFile(this,
"com.howaboutthis.satyaraj.fileprovider",
photoFile);
takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT, photoURI);
startActivityForResult(takePictureIntent, CLICK_IMAGE_REQUEST);
}
}
}
// Adding the pic to the gallery so that it is visible to everyone
private void galleryAddPic() {
Intent mediaScanIntent = new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE);
File f = new File(mCurrentPhotoPath);
Uri contentUri = Uri.fromFile(f);
mediaScanIntent.setData(contentUri);
this.sendBroadcast(mediaScanIntent);
}
}
简单读取load并保存
final BitmapFactory.Options options = new BitmapFactory.Options();
options.inJustDecodeBounds = true;
options.inSampleSize = 2; //you can also calculate your inSampleSize
options.inJustDecodeBounds = false;
options.inTempStorage = new byte[16 * 1024];
options.inPreferredConfig = Bitmap.Config.ARGB_8888;
Bitmap bmp= BitmapFactory.decodeFile(photoPath, options);
FileOutputStream out = null;
try {
out = new FileOutputStream(photoPath);
bmp.compress(Bitmap.CompressFormat.PNG, 100, out); // bmp is your Bitmap instance
// PNG is a lossless format, the compression factor (100) is ignored
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
if (out != null) {
out.close();
}
} catch (IOException e) {
e.printStackTrace();
}
}
如果你想要一个非常小的图像，那么你还必须更改它的分辨率
public String compressImage(String imagePath) { 位图 scaledBitmap = null;
BitmapFactory.Options options = new BitmapFactory.Options();
options.inJustDecodeBounds = true;
Bitmap bmp = BitmapFactory.decodeFile(imagePath, options);
int actualHeight = options.outHeight;
int actualWidth = options.outWidth;
float imgRatio = (float) actualWidth / (float) actualHeight;
float maxRatio = maxWidth / maxHeight;
if (actualHeight > maxHeight || actualWidth > maxWidth) {
if (imgRatio < maxRatio) {
imgRatio = maxHeight / actualHeight;
actualWidth = (int) (imgRatio * actualWidth);
actualHeight = (int) maxHeight;
} else if (imgRatio > maxRatio) {
imgRatio = maxWidth / actualWidth;
actualHeight = (int) (imgRatio * actualHeight);
actualWidth = (int) maxWidth;
} else {
actualHeight = (int) maxHeight;
actualWidth = (int) maxWidth;
}
}
options.inSampleSize = calculateInSampleSize(options, actualWidth, actualHeight);
options.inJustDecodeBounds = false;
options.inDither = false;
options.inPurgeable = true;
options.inInputShareable = true;
options.inTempStorage = new byte[16 * 1024];
try {
bmp = BitmapFactory.decodeFile(imagePath, options);
} catch (OutOfMemoryError exception) {
exception.printStackTrace();
}
try {
scaledBitmap = Bitmap.createBitmap(actualWidth, actualHeight, Bitmap.Config.RGB_565);
} catch (OutOfMemoryError exception) {
exception.printStackTrace();
}
float ratioX = actualWidth / (float) options.outWidth;
float ratioY = actualHeight / (float) options.outHeight;
float middleX = actualWidth / 2.0f;
float middleY = actualHeight / 2.0f;
Matrix scaleMatrix = new Matrix();
scaleMatrix.setScale(ratioX, ratioY, middleX, middleY);
Canvas canvas = new Canvas(scaledBitmap);
canvas.setMatrix(scaleMatrix);
canvas.drawBitmap(bmp, middleX - bmp.getWidth() / 2, middleY - bmp.getHeight() / 2, new Paint(Paint.FILTER_BITMAP_FLAG));
if(bmp!=null)
{
bmp.recycle();
}
ExifInterface exif;
try {
exif = new ExifInterface(imagePath);
int orientation = exif.getAttributeInt(ExifInterface.TAG_ORIENTATION, 0);
Matrix matrix = new Matrix();
if (orientation == 6) {
matrix.postRotate(90);
} else if (orientation == 3) {
matrix.postRotate(180);
} else if (orientation == 8) {
matrix.postRotate(270);
}
scaledBitmap = Bitmap.createBitmap(scaledBitmap, 0, 0, scaledBitmap.getWidth(), scaledBitmap.getHeight(), matrix, true);
} catch (IOException e) {
e.printStackTrace();
}
FileOutputStream out = null;
String filepath = getFilename();
try {
out = new FileOutputStream(filepath);
//write the compressed bitmap at the destination specified by filename.
scaledBitmap.compress(Bitmap.CompressFormat.JPEG, 80, out);
} catch (FileNotFoundException e) {
e.printStackTrace();
}
return filepath;
}
public static int calculateInSampleSize(BitmapFactory.Options options, int reqWidth, int reqHeight) {
final int height = options.outHeight;
final int width = options.outWidth;
int inSampleSize = 1;
if (height > reqHeight || width > reqWidth) {
final int heightRatio = Math.round((float) height / (float) reqHeight);
final int widthRatio = Math.round((float) width / (float) reqWidth);
inSampleSize = heightRatio < widthRatio ? heightRatio : widthRatio;
}
final float totalPixels = width * height;
final float totalReqPixelsCap = reqWidth * reqHeight * 2;
while (totalPixels / (inSampleSize * inSampleSize) > totalReqPixelsCap) {
inSampleSize++;
}
return inSampleSize;
}