When Using Action_image_capture Why Is The Preview Image Blurry
I have managed to implement usage of the ACTION_IMAGE_CAPTURE intend in order to take a photo in my app. For some reason, when the photo is taken, the preview image (the image that
Solution 1:
not how to tell the camera app to use a full quality preview
That is because there is no way for you to tell the camera app "to use a full quality preview".
There thousands upon thousands of Android device models. There are hundreds of built-in camera apps across those device models, and many more available for download from places like the Play Store. The behavior of ACTION_IMAGE_CAPTURE is up to those apps' developers, including:
whether or not they have a confirmation screen ("displayed with the tick/cross icon before it is sent back to my app")
what the image looks like on that confirmation screen
Other than EXTRA_OUTPUT, there is no other documented aspect to the ACTION_IMAGE_CAPTURE protocol in terms of input, and so camera apps do not need to offer anything else.
For whatever reason, your particular camera app is not implemented especially well.
Solution 2:
try to check below code work for my app perfect.
TakeImageActivity.java
import java.io.File;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.Locale;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.database.Cursor;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.provider.MediaStore;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.Toast;
publicclassTakeImageActivityextendsActivityBaseimplementsOnClickListener {
File file,mFileTemp;
Button buttonTakeImageCam;
ImageView imageView;
Uri mPhotoUri;
Bitmap thumbnail;
private Uri fileUri;
privatestaticfinalStringIMAGE_DIRECTORY_NAME="PhotoEditor Camera";
publicstaticfinalintMEDIA_TYPE_IMAGE=1;
@OverrideprotectedvoidonCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stubsuper.onCreate(savedInstanceState);
setContentView(R.layout.take_image_activity);
file = newFile(Environment.getExternalStorageDirectory()
.getAbsolutePath() + "/FrameImages");
initializetion();
}
privatevoidinitializetion() {
// TODO Auto-generated method stub
buttonTakeImageCam = (Button) findViewById(R.id.buttonTakeImageCam);
buttonTakeImageCam.setOnClickListener(this);
if (!isDeviceSupportCamera()) {
Toast.makeText(getApplicationContext(),
"Sorry! Your device doesn't support camera",
Toast.LENGTH_LONG).show();
// will close the app if the device does't have camera
finish();
}
}
privatebooleanisDeviceSupportCamera() {
if (getApplicationContext().getPackageManager().hasSystemFeature(
PackageManager.FEATURE_CAMERA)) {
// this device has a camerareturntrue;
} else {
// no camera on this devicereturnfalse;
}
}
public Uri getOutputMediaFileUri(int type) {
return Uri.fromFile(getOutputMediaFile(type));
}
privatestatic File getOutputMediaFile(int type) {
// External sdcard locationFilemediaStorageDir=newFile(
Environment
.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES),
IMAGE_DIRECTORY_NAME);
// Create the storage directory if it does not existif (!mediaStorageDir.exists()) {
if (!mediaStorageDir.mkdirs()) {
Log.d(IMAGE_DIRECTORY_NAME, "Oops! Failed create "
+ IMAGE_DIRECTORY_NAME + " directory");
returnnull;
}
}
StringtimeStamp=newSimpleDateFormat("yyyyMMdd_HHmmss",
Locale.getDefault()).format(newDate());
File mediaFile;
if (type == MEDIA_TYPE_IMAGE) {
mediaFile = newFile(mediaStorageDir.getPath() + File.separator
+ "IMG_" + timeStamp + ".jpg");
} else {
returnnull;
}
return mediaFile;
}
@OverridepublicvoidonClick(View v) {
// TODO Auto-generated method stubswitch (v.getId()) {
case R.id.buttonTakeImageCam:
Intentintent=newIntent(MediaStore.ACTION_IMAGE_CAPTURE);
fileUri = getOutputMediaFileUri(MEDIA_TYPE_IMAGE);
intent.putExtra(MediaStore.EXTRA_OUTPUT, fileUri);
// start the image capture Intent
startActivityForResult(intent, 2);
break;
default:
break;
}
}
@OverrideprotectedvoidonActivityResult(int requestCode, int resultCode, Intent data) {
// TODO Auto-generated method stubif (resultCode != RESULT_OK)
return;
switch (requestCode) {
case2:
if (resultCode == RESULT_OK) {
// successfully captured the image// display it in image view
previewCapturedImage();
} elseif (resultCode == RESULT_CANCELED) {
// user cancelled Image capture
Toast.makeText(getApplicationContext(),
"User cancelled image capture", Toast.LENGTH_SHORT)
.show();
} else {
// failed to capture image
Toast.makeText(getApplicationContext(),
"Sorry! Failed to capture image", Toast.LENGTH_SHORT)
.show();
}
break;
}
}
privatevoidpreviewCapturedImage() {
try {
// bimatp factory
BitmapFactory.Optionsoptions=newBitmapFactory.Options();
// downsizing image as it throws OutOfMemory Exception for larger// images
options.inSampleSize = 2;
finalBitmapbitmap= BitmapFactory.decodeFile(fileUri.getPath(),
options);
//Set image here
imgPreview.setImageBitmap(bitmap);
} catch (NullPointerException e) {
e.printStackTrace();
}
}
public Bitmap getPreview(String fileName) {
Fileimage=newFile(fileName);
BitmapFactory.Optionsbounds=newBitmapFactory.Options();
bounds.inJustDecodeBounds = true;
BitmapFactory.decodeFile(image.getPath(), bounds);
if ((bounds.outWidth == -1) || (bounds.outHeight == -1)) {
returnnull;
}
intoriginalSize= (bounds.outHeight > bounds.outWidth) ? bounds.outHeight
: bounds.outWidth;
BitmapFactory.Optionsopts=newBitmapFactory.Options();
opts.inSampleSize = originalSize / 64;
// opts.inSampleSize = originalSize;return BitmapFactory.decodeFile(image.getPath());
}
public String getPath(Uri uri) {
String[] projection = { MediaStore.Images.Media.DATA };
Cursorcursor= managedQuery(uri, projection, null, null, null);
intcolumn_index= cursor
.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
cursor.moveToFirst();
return cursor.getString(column_index);
}
}
take_image_activity.xml
<?xml version="1.0" encoding="utf-8"?><RelativeLayoutxmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:layout_width="fill_parent"android:layout_height="fill_parent"android:layout_gravity="center" ><Buttonandroid:id="@+id/buttonTakeImageCam"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_centerVertical="true"android:layout_centerHorizontal="true"android:layout_marginTop="10dp"android:textSize="25sp"android:text="Camera"/></RelativeLayout>AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?><manifestxmlns:android="http://schemas.android.com/apk/res/android"package="com.camera.photo"android:versionCode="1"android:versionName="1.0" ><uses-sdkandroid:minSdkVersion="9" /><uses-permissionandroid:name="android.permission.WRITE_EXTERNAL_STORAGE" /><uses-permissionandroid:name="android.permission.READ_EXTERNAL_STORAGE" /><uses-permissionandroid:name="android.permission.CAMERA"/><uses-featureandroid:name="android.hardware.camera"android:required="true"/><applicationandroid:icon="@drawable/ic_launcher"android:largeHeap="true"android:label="@string/app_name" ><activityandroid:name=".TakeImageActivity"android:hardwareAccelerated="false"android:screenOrientation="portrait"android:label="@string/app_name" ><intent-filter><actionandroid:name="android.intent.action.MAIN" /><categoryandroid:name="android.intent.category.LAUNCHER" /></intent-filter></activity></application></manifest>
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