What is the best way to blur background images like the image below? I saw some code and libraries but their are a couple of years old or like BlurBehind library, but it doesn't give the same effect.
The easiest way to do that is use a library. Take a look at this one: https://github.com/wasabeef/Blurry
With the library you only need to do this:
Blurry.with(context)
.radius(10)
.sampling(8)
.color(Color.argb(66, 255, 255, 0))
.async()
.onto(rootView);
This is an easy way to blur Images Efficiently with Android's RenderScript that I found on this article
Create a Class called BlurBuilder
public class BlurBuilder {
private static final float BITMAP_SCALE = 0.4f;
private static final float BLUR_RADIUS = 7.5f;
public static Bitmap blur(Context context, Bitmap image) {
int width = Math.round(image.getWidth() * BITMAP_SCALE);
int height = Math.round(image.getHeight() * BITMAP_SCALE);
Bitmap inputBitmap = Bitmap.createScaledBitmap(image, width, height, false);
Bitmap outputBitmap = Bitmap.createBitmap(inputBitmap);
RenderScript rs = RenderScript.create(context);
ScriptIntrinsicBlur theIntrinsic = ScriptIntrinsicBlur.create(rs, Element.U8_4(rs));
Allocation tmpIn = Allocation.createFromBitmap(rs, inputBitmap);
Allocation tmpOut = Allocation.createFromBitmap(rs, outputBitmap);
theIntrinsic.setRadius(BLUR_RADIUS);
theIntrinsic.setInput(tmpIn);
theIntrinsic.forEach(tmpOut);
tmpOut.copyTo(outputBitmap);
return outputBitmap;
}
}
Copy any image to your drawable folder
Use BlurBuilder in your activity like this:
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN);
setContentView(R.layout.activity_login);
mContainerView = (LinearLayout) findViewById(R.id.container);
Bitmap originalBitmap = BitmapFactory.decodeResource(getResources(), R.drawable.background);
Bitmap blurredBitmap = BlurBuilder.blur( this, originalBitmap );
mContainerView.setBackground(new BitmapDrawable(getResources(), blurredBitmap));
Renderscript is included into support v8 enabling this answer down to api 8. To enable it using gradle include these lines into your gradle file (from this answer)
defaultConfig {
...
renderscriptTargetApi *your target api*
renderscriptSupportModeEnabled true
}
Result
You can use:
Glide.with(getContext()).load(R.mipmap.bg)
.apply(bitmapTransform(new BlurTransformation(22)))
.into((ImageView) view.findViewById(R.id.imBg));
This requires the following addition to your build.gradle file:
implementation 'jp.wasabeef:glide-transformations:4.0.0'
The simplest way to achieve this is given below,
I)
Glide.with(context.getApplicationContext())
.load(Your Path)
.override(15, 15) // (change according to your wish)
.error(R.drawable.placeholder)
.into(image.score);
else you can follow the code below..
II)
1.Create a class.(Code is given below)
public class BlurTransformation extends BitmapTransformation {
private RenderScript rs;
public BlurTransformation(Context context) {
super( context );
rs = RenderScript.create( context );
}
#Override
protected Bitmap transform(BitmapPool pool, Bitmap toTransform, int outWidth, int outHeight) {
Bitmap blurredBitmap = toTransform.copy( Bitmap.Config.ARGB_8888, true );
// Allocate memory for Renderscript to work with
Allocation input = Allocation.createFromBitmap(
rs,
blurredBitmap,
Allocation.MipmapControl.MIPMAP_FULL,
Allocation.USAGE_SHARED
);
Allocation output = Allocation.createTyped(rs, input.getType());
// Load up an instance of the specific script that we want to use.
ScriptIntrinsicBlur script = ScriptIntrinsicBlur.create(rs, Element.U8_4(rs));
script.setInput(input);
// Set the blur radius
script.setRadius(10);
// Start the ScriptIntrinisicBlur
script.forEach(output);
// Copy the output to the blurred bitmap
output.copyTo(blurredBitmap);
toTransform.recycle();
return blurredBitmap;
}
#Override
public String getId() {
return "blur";
}
}
2.Set image to ImageView using Glide.
eg:
Glide.with(this)
.load(expertViewDetailsModel.expert.image)
.asBitmap()
.transform(new BlurTransformation(this))
.into(ivBackground);
Android 12, Preview 1 comes with built-in blur feature. We need not depend on external library now. Here is the code
imageView.setRenderEffect(
RenderEffect.createBlurEffect(
20.0f, 20.0f, SHADER_TITLE_MODE
)
)
Works only on Android 12 as of now so is not a universal solution yet
To blur a image
1 Set your target SDK and compile SDK to Android S in build.gradle
2.Use Render Effect
3.set blur as follows
your_view.setRenderEffect(
RenderEffect.createBlurEffect(
30f, //radius X
30f, //Radius Y
Shader.TileMode.[X]// X=CLAMP,DECAL,MIRROR,REPEAT
)
4.The 4 types of blend mode are
CLAMP- Replicate the edge color if the shader draws outside of its original bounds
DECAL- Render the shader's image pixels only within its original bounds
MIRROR- Repeat the shader's image horizontally and vertically, alternating mirror images so that adjacent images always seam.
REPEAT - Repeat the shader's image horizontally and vertically.
This worked for me. Tested on Android 9 and 12. Use Glide library to shrink the bitmap.
// Glide
implementation 'com.github.bumptech.glide:glide:4.13.0'
kapt 'com.github.bumptech.glide:compiler:4.13.0'
Glide.with(context).asBitmap().load(favorite.coverImage).into(object : CustomTarget<Bitmap>(2, 2) {
override fun onResourceReady(resource: Bitmap, transition: Transition<in Bitmap>?) {
ivContentHolder.setImageDrawable(BitmapDrawable(itemBinding.root.context.resources, resource))
}
override fun onLoadCleared(placeholder: Drawable?) {
ivContentHolder.setImageDrawable(null)
}
CustomTarget(2, 2) is the trick. The lower the value the more the blur effect. Basically its used to shrink the image size. Then all you have to do is set the shrunk bitmap to your imageView. And most important is to set ScaleType of the imageView to CenterCrop.
<ImageView
android:id="#+id/iv_content_holder"
android:layout_width="match_parent"
android:layout_height="96dp"
android:scaleType="centerCrop"
android:src="#color/purple_700"
app:layout_constraintBottom_toBottomOf="parent" />
The result will look something like this. Blur Effect Demo
this might not be the most efficient solution but I had to use it since the wasabeef/Blurry library didn't work for me. this could be handy if you intend to have some getting-blurry animation:
1- you need to have 2 versions of the picture, normal one and the blurry one u make with photoshop or whatever
2- set the images fit on each other in your xml, then one of them could be seen and that's the upper one
3- set fadeout animation on the upper one:
final Animation fadeOut = new AlphaAnimation(1, 0);
fadeOut.setInterpolator(new AccelerateInterpolator());
fadeOut.setDuration(1000);
fadeOut.setAnimationListener(new Animation.AnimationListener() {
#Override
public void onAnimationStart(Animation animation) {}
#Override
public void onAnimationEnd(Animation animation) {upperone.setVisibility(View.GONE);}
#Override
public void onAnimationRepeat(Animation animation) {}
});
upperone.startAnimation(fadeOut);
you can use Glide for load and transform into blur image,
1) for only one view,
val requestOptions = RequestOptions()
requestOptions.transform(BlurTransformation(50)) // 0-100
Glide.with(applicationContext).setDefaultRequestOptions(requestOptions)
.load(imageUrl).into(view)
2) if you are using the adapter to load an image in the item, you should write your code in the if-else block, otherwise, it will make all your images blurry.
if(isBlure){
val requestOptions = RequestOptions()
requestOptions.transform(BlurTransformation(50))
Glide.with(applicationContext).setDefaultRequestOptions(requestOptions)
.load(imageUrl).into(view )
}else{
val requestOptions = RequestOptions()
Glide.with(applicationContext).setDefaultRequestOptions(requestOptions).load(imageUrl).into(view)
}
Android 12 (Api level 31) has new Theme parameters to apply for windows to blur background:
<style name="BlurryTheme" parent="...">
<item name="android:windowBackgroundBlurRadius">30dp</item>
<item name="android:windowBlurBehindEnabled">true</item>
<item name="android:windowBlurBehindRadius">10dp</item>
</style>
And also new API for View to apply blur effect android.view.View#setRenderEffect:
imageView.setRenderEffect(
RenderEffect.createBlurEffect(
20.0f, 20.0f, Shader.TileMode.CLAMP
)
)
You can have a view with Background color as black and set alpha for the view as 0.7 or whatever as per your requirement.
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#drawable/onboardingimg1">
<View
android:id="#+id/opacityFilter"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#android:color/black"
android:layout_alignParentBottom="true"
android:alpha="0.7">
</View>
</RelativeLayout>
Try below code..
Put This Code in On Create..
if (android.os.Build.VERSION.SDK_INT > 9) {
StrictMode.ThreadPolicy policy =
new StrictMode.ThreadPolicy.Builder().permitAll().build();
StrictMode.setThreadPolicy(policy);
}
Url="https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcTIur0ueOsmVmFVmAA-SxcCT7bTodZb3eCNbiShIiP9qWCWk3mDfw";
// Picasso.with(getContext()).load(Url).into(img_profile);
// Picasso.with(getContext()).load(Url).into(img_c_profile);
bitmap=getBitmapFromURL(Url);
Bitmap blurred = blurRenderScript(bitmap, 12);//second parametre is radius
img_profile.setImageBitmap(blurred);
Create Below Methods.. Just Copy Past..
public static Bitmap getBitmapFromURL(String src) {
try {
URL url = new URL(src);
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
connection.setDoInput(true);
connection.connect();
InputStream input = connection.getInputStream();
Bitmap myBitmap = BitmapFactory.decodeStream(input);
return myBitmap;
} catch (IOException e) {
// Log exception
return null;
}
}
#SuppressLint("NewApi")
private Bitmap blurRenderScript(Bitmap smallBitmap, int radius) {
try {
smallBitmap = RGB565toARGB888(smallBitmap);
} catch (Exception e) {
e.printStackTrace();
}
Bitmap bitmap = Bitmap.createBitmap(
smallBitmap.getWidth(), smallBitmap.getHeight(),
Bitmap.Config.ARGB_8888);
RenderScript renderScript = RenderScript.create(getActivity());
Allocation blurInput = Allocation.createFromBitmap(renderScript, smallBitmap);
Allocation blurOutput = Allocation.createFromBitmap(renderScript, bitmap);
ScriptIntrinsicBlur blur = ScriptIntrinsicBlur.create(renderScript,
Element.U8_4(renderScript));
blur.setInput(blurInput);
blur.setRadius(radius); // radius must be 0 < r <= 25
blur.forEach(blurOutput);
blurOutput.copyTo(bitmap);
renderScript.destroy();
return bitmap;
}
private Bitmap RGB565toARGB888(Bitmap img) throws Exception {
int numPixels = img.getWidth() * img.getHeight();
int[] pixels = new int[numPixels];
//Get JPEG pixels. Each int is the color values for one pixel.
img.getPixels(pixels, 0, img.getWidth(), 0, 0, img.getWidth(), img.getHeight());
//Create a Bitmap of the appropriate format.
Bitmap result = Bitmap.createBitmap(img.getWidth(), img.getHeight(), Bitmap.Config.ARGB_8888);
//Set RGB pixels.
result.setPixels(pixels, 0, result.getWidth(), 0, 0, result.getWidth(), result.getHeight());
return result;
}
This might be a very late reply but I hope it helps someone.
You can use third party libs such as RenderScript/Blurry/etc.
If you do not want to use any third party libs, you can do the below using alpha(setting alpha to 0 means complete blur and 1 means same as existing).
Note(If you are using point 2) : While setting alpha to the background, it will blur the whole layout. To avoid this, create a new xml containing drawable and set alpha here to 0.5 (or value of your wish) and use this drawable name (name of file) as the background.
For example, use it as below (say file name is bgndblur.xml):
<bitmap xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:shape="rectangle"
android:src="#drawable/registerscreenbackground"
android:alpha="0.5">
Use the below in your layout :
<....
android:background="#drawable/bgndblur">
Hope this helped.
You can quickly get to blur effect by doing the following.
// Add this to build.gradle app //
Compile ' com.github.jgabrielfreitas:BlurImageView:1.0.1 '
// Add to XML
<com.jgbrielfreitas.core.BlurImageView
android:id="#+id/iv_blur_image"
android:layout_width="match_parent"
android:layout_height="match_parent"
/>
//Add this to java
Import com.jgabrielfreitas.core.BlueImageView;
// Under public class *activity name * //
BlurImageView myBlurImage;
// Under Oncreate//
myBlurImage = (ImageView) findViewById(R.id.iv_blur_image)
MyBlurImage.setBlue(5)
I hope that helps someone
I am trying to make a simple image gallery through which I can set wallpaper; I am using the below code to fetch the files from download folder and display it in scroll view.
I am able to do that, but now I want to fetch the currently displayed image so that I can set that image as wallpaper.
Below is the code I have for my activity class:
public class MainActivity extends Activity {
LinearLayout myGallery;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
myGallery = (LinearLayout)findViewById(R.id.mygallery);
String ExternalStorageDirectoryPath = Environment
.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS)
.getAbsolutePath();
String targetPath = ExternalStorageDirectoryPath ;
Toast.makeText(getApplicationContext(), targetPath, Toast.LENGTH_LONG).show();
File targetDirector = new File(targetPath);
File[] files = targetDirector.listFiles();
for (File file : files){
myGallery.addView(insertPhoto(file.getAbsolutePath()));
}
}
View insertPhoto(String path){
Bitmap bm = decodeSampledBitmapFromUri(path, 520, 520);
LinearLayout layout = new LinearLayout(getApplicationContext());
layout.setLayoutParams(new LayoutParams(550, 550));//Size of view
layout.setGravity(Gravity.CENTER);
ImageView imageView = new ImageView(getApplicationContext());
imageView.setLayoutParams(new LayoutParams(520, 520));
imageView.setScaleType(ImageView.ScaleType.CENTER_CROP);
imageView.setImageBitmap(bm);
layout.addView(imageView);
return layout;
}
public Bitmap decodeSampledBitmapFromUri(String path, int reqWidth, int reqHeight) {
Bitmap bm = null;
// First decode with inJustDecodeBounds=true to check dimensions
final BitmapFactory.Options options = new BitmapFactory.Options();
options.inJustDecodeBounds = true;
BitmapFactory.decodeFile(path, options);
// Calculate inSampleSize
options.inSampleSize = calculateInSampleSize(options, reqWidth, reqHeight);
// Decode bitmap with inSampleSize set
options.inJustDecodeBounds = false;
bm = BitmapFactory.decodeFile(path, options);
return bm;
}
public int calculateInSampleSize(
BitmapFactory.Options options, int reqWidth, int reqHeight) {
// Raw height and width of image
final int height = options.outHeight;
final int width = options.outWidth;
int inSampleSize = 1;
if (height > reqHeight || width > reqWidth) {
if (width > height) {
inSampleSize = Math.round((float)height / (float)reqHeight);
} else {
inSampleSize = Math.round((float)width / (float)reqWidth);
}
}
return inSampleSize;
}
}
Please tell me how I can fetch the image which is currently displayed in the scroll view.
Thanks
Aman
its been 5 months yet not answered, but i think i will try to answer it.
I think you need a custom view ie. with canvas. create a canvas and then create a bitmap in canvas. After that when you get a bitmap from linear layout in the form of URI, in your code a method decodeSampledBitmapFromUri you are getting a bitmap, simply assign the bitmap to the created bitmap on the canvas.
I follow the example in this link :
Viewpager Example in android
its work fine but when i placed my own high resolution images (large in size ), it gave me exception :
java.lang.OutOfMemoryError: bitmap size exceeds VM budget.
i post an old question about that but it closed coz its duplicated for that reason , i tried and searched alot, finally i found the solution which is : scaling my images to avoid memory exception by following :
author advice and answers here in stackfllow and android development site , i ended with the bellow code , which also end with same exception, i think there is some wrong in my code coz im still learning java and android development , but that what i can end with , please any help or advice will be appreciated ,
thanks .
my code:
ViewPagerAdapter
public class ViewPagerAdapter extends PagerAdapter {
Activity activity;
int imageArray[];
public ViewPagerAdapter(Activity act, int[] imgArra) {
imageArray = imgArra;
activity = act;
}
public int getCount() {
return imageArray.length;
}
public Object instantiateItem(View collection, int position) {
ImageView view = new ImageView(activity);
view.setLayoutParams(new LayoutParams(LayoutParams.MATCH_PARENT,
LayoutParams.MATCH_PARENT));
view.setScaleType(ScaleType.FIT_XY);
view.setBackgroundResource(imageArray[position]);
((ViewPager) collection).addView(view, 0);
return view;
}
#Override
public void destroyItem(View arg0, int arg1, Object arg2) {
((ViewPager) arg0).removeView((View) arg2);
}
#Override
public boolean isViewFromObject(View arg0, Object arg1) {
return arg0 == ((View) arg1);
}
#Override
public Parcelable saveState() {
return null;
}
public static Bitmap decodeSampledBitmapFromResource(String imageArra,
int reqWidth, int reqHeight) {
// First decode with inJustDecodeBounds=true to check dimensions
final BitmapFactory.Options options = new BitmapFactory.Options();
options.inJustDecodeBounds = true;
BitmapFactory.decodeFile(imageArra, options);
// Calculate inSampleSize
options.inSampleSize = calculateInSampleSize(options, reqWidth, reqHeight);
// Decode bitmap with inSampleSize set
options.inJustDecodeBounds = false;
return BitmapFactory.decodeFile(imageArra, options);
}
public static int calculateInSampleSize(
BitmapFactory.Options options, int reqWidth, int reqHeight) {
// Raw height and width of image
final int height = options.outHeight;
final int width = options.outWidth;
int inSampleSize = 1;
if (height > reqHeight || width > reqWidth) {
if (width > height) {
inSampleSize = Math.round((float)height / (float)reqHeight);
} else {
inSampleSize = Math.round((float)width / (float)reqWidth);
}
}
return inSampleSize;}}
PageIndicatorActivity:
public class PageIndicatorActivity extends Activity {
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ViewPagerAdapter adapter = new ViewPagerAdapter(this, imageArra);
ViewPager myPager = (ViewPager) findViewById(R.id.myfivepanelpager);
myPager.setAdapter(adapter);
myPager.setCurrentItem(0);
}
private int imageArra[] = { R.drawable.one, R.drawable.two,
R.drawable.three, R.drawable.four,
R.drawable.five, R.drawable.six,
R.drawable.seven, R.drawable.eight,R.drawable.nine,
R.drawable.ten }; }
logcat stack :
FATAL EXCEPTION: main
java.lang.OutOfMemoryError: bitmap size exceeds VM budget
at android.graphics.BitmapFactory.nativeDecodeAsset(Native Method)
at android.graphics.BitmapFactory.decodeStream(BitmapFactory.java:563)
at android.graphics.BitmapFactory.decodeResourceStream(BitmapFactory.java:439)
at android.graphics.drawable.Drawable.createFromResourceStream(Drawable.java:697)
at android.content.res.Resources.loadDrawable(Resources.java:1709)
at android.content.res.Resources.getDrawable(Resources.java:581)
at android.view.View.setBackgroundResource(View.java:7586)
at com.horizontalscrollviewwithpageindicator.ViewPagerAdapter.instantiateItem
(ViewPagerAdapter.java:33)
at android.support.v4.view.PagerAdapter.instantiateItem(PagerAdapter.java:110)
at android.support.v4.view.ViewPager.addNewItem(ViewPager.java:692)
at android.support.v4.view.ViewPager.populate(ViewPager.java:875)
at android.support.v4.view.ViewPager.populate(ViewPager.java:772)
at android.support.v4.view.ViewPager.onMeasure(ViewPager.java:1234)
at android.view.View.measure(View.java:8366)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:3138)
at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1017)
at android.widget.LinearLayout.measureVertical(LinearLayout.java:386)
at android.widget.LinearLayout.onMeasure(LinearLayout.java:309)
at android.view.View.measure(View.java:8366)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:3138)
at android.widget.FrameLayout.onMeasure(FrameLayout.java:250)
at android.view.View.measure(View.java:8366)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:3138)
at android.widget.FrameLayout.onMeasure(FrameLayout.java:250)
at android.view.View.measure(View.java:8366)
at android.view.ViewRoot.performTraversals(ViewRoot.java:844)
at android.view.ViewRoot.handleMessage(ViewRoot.java:1865)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:123)
at android.app.ActivityThread.main(ActivityThread.java:3687)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:507)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:842)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:600)
at dalvik.system.NativeStart.main(Native Method)
Try the following tips.
- Android works well with .png images, where the same size image in .jpg format creates a OutOfMemoryError.
See this link for the solution from official Android Developers Site:
http://developer.android.com/training/displaying-bitmaps/load-bitmap.html
You never use the method to scale the images, also your inSampleSize needs to be a power of two(i believe). These images are way too big (4.5 mb that you stated in your previous post). On top of a huge bitmap being stored, the view pager keeps 3 views in memory at any given time. Your memory allocated for your view pager is something like >13.5mb. Replace your instantiate view with the following:
ImageView myView = new ImageView(context);
BitmapFactory.Options options = new BitmapFactory.Options();
options.inSampleSize = 4;
Bitmap bitmap = BitmapFactory.decodeResource(activity.getResouces(), imageArray[position], options );
myView.setImageBitmap(bitmap);
((ViewPager) view).addView(myView);
return myView;
If this still provides an error, use options.inSampleSize = 8;
I am getting the current wallpaper by using following code:
final WallpaperManager wallpaperManager = WallpaperManager.getInstance(this);
final Drawable wallpaperDrawable = wallpaperManager.getDrawable();
How can I create a bitmap from this?
like when I create a bitmap from res folder I use this
Resources res = getApplicationContext().getResources();
b = BitmapFactory.decodeResource(res, R.drawable.wall);
What code I should use to get current wallpaper into the bitmap so I can draw it on my canvas and use it as my live wallpaper background?
The Drawable fetched should really be a BitmapDrawable. You can verify this using instanceof if necessary.
That being the case, all you have to do is:
final Drawable wallpaperDrawable = wallpaperManager.getDrawable();
final Bitmap wallpaperBitmap = ((BitmapDrawable) wallpaperDrawable).getBitmap();
EDIT: If it turns out that the Drawable is NOT a BitmapDrawable, you can use the following method to convert it (found in this answer, credit to André):
public static Bitmap drawableToBitmap(Drawable drawable) {
if (drawable instanceof BitmapDrawable) {
return ((BitmapDrawable)drawable).getBitmap();
}
Bitmap bitmap = Bitmap.createBitmap(drawable.getIntrinsicWidth(), drawable.getIntrinsicHeight(), Config.ARGB_8888);
Canvas canvas = new Canvas(bitmap);
drawable.setBounds(0, 0, canvas.getWidth(), canvas.getHeight());
drawable.draw(canvas);
return bitmap;
}
I've been trying to make a small gallery and the bitmaps are always returning null. The code is like this:
public View getView(int position, View convertView, ViewGroup parent) {
ImageView i = new ImageView(mContext);
//Toast.makeText(getApplicationContext(),imgArray2.length+ " Image path from gallery : " + imgArray2[position], Toast.LENGTH_SHORT).show();
//Bitmap bitmap = BitmapFactory.decodeFile(imgArray2[position]);
//Uri uri = Uri.parse(imgArray2[position]);
//Bitmap bitmap = decodeFile(new File(uri.toString()).getAbsoluteFile());
//Bitmap bitmap = BitmapFactory.decodeFile(uri.toString());
//int imgID = getResources().getIdentifier(path, "drawable", "mypack.pack");
BitmapFactory.Options options = new BitmapFactory.Options();
options.inSampleSize = 15;
Bitmap bitmap = BitmapFactory.decodeFile(imgArray2[position], options);
//i.setImageResource(imgArray2[position]);
i.setImageBitmap(bitmap);
//Uri uri = Uri.parse(imgArray2[position]);
Toast.makeText(getApplicationContext(), "Image path from gallery : " + imgArray2[position], Toast.LENGTH_SHORT).show();
//i.setImageURI(Uri.parse(imgArray2[position]));
i.setLayoutParams(new Gallery.LayoutParams(170, 170));
i.setScaleType(ImageView.ScaleType.FIT_XY);
i.setBackgroundResource(mGalleryItemBackground);
return i;
}
As you can see by the commented out code, I've been trying many option. setImageURI works but I need to scale down the image as I have many. The images are in the sd card. I checked the path of image and it is correct. What am doing wrong here?
Did you analyze the logs? Sometimes when images are too big to decode, the Dalvik VM will deny a memory request resulting in a null image being returned.