I am trying to save an image with a text. to do this I was using bitmap and canvas but the saved images were not clear, So I am trying this solution
How do I convert a RelativeLayout with an Imageview and TextView to a PNG image?
Now this thing is working fine and image quality is also good but there is one problem
RelativeLayout relativeLayout = (RelativeLayout)findViewById(R.id.relativeLayout);
TextView textView = (TextView)relativeLayout.findViewById(R.id.quote);
textView.setText("My custom Text adding to Image hare ram");
Bitmap bitmap = Bitmap.createBitmap(relativeLayout.getWidth(), relativeLayout.getHeight(), Bitmap.Config.ARGB_8888);
Canvas c = new Canvas(bitmap);
relativeLayout.draw(c);
new SaveToGalary(bitmap)
but now if I try to edit this relative layout this gets reflected on the screen, is there any way so that I can get a copy of this view OR can I load a layout which is not displayed right now. for example I will be doing
RelativeLayout relativeLayout = (RelativeLayout)findViewById(R.id.to_save_layout);
TextView textView = (TextView)relativeLayout.findViewById(R.id.quote);
textView.setText("My custom Text adding to Image hare ram");
Bitmap bitmap = Bitmap.createBitmap(relativeLayout.getWidth(), relativeLayout.getHeight(), Bitmap.Config.ARGB_8888);
Canvas c = new Canvas(bitmap);
relativeLayout.draw(c);
new SaveToGalary(bitmap)
here I will be creating a layout which i will not display but just keep it for saving image. I tried this but this is giving me null pointer exception.
Mike has given a perfect answer, summing it up we can do
public void GenerateImageRelative()
{
LayoutInflater inflater = (LayoutInflater)getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View view = inflater.inflate(R.layout.to_save_image, null);
RelativeLayout relativeLayout = (RelativeLayout)view.findViewById(R.id.to_save_image_relative);
Bitmap bitmap = getLayoutRender(view, -1, -1);
Canvas c = new Canvas(bitmap);
relativeLayout.draw(c);
new SaveToGalary().insertImage(getContentResolver(),bitmap,"man","ram");
}
private Bitmap getLayoutRender(View rootView, int width, int height) {
TextView textView = (TextView)rootView.findViewById(R.id.quote_to_save);
textView.setText("My custom Text adding to Image hare ram");
// Here you can call findViewById() on rootView just like usual
// to get references to Views you want to change.
Display display = getWindowManager().getDefaultDisplay();
int w,h;
if (android.os.Build.VERSION.SDK_INT < Build.VERSION_CODES.HONEYCOMB_MR2) {
w = width < 0 ? display.getWidth():width;
h = height < 0 ? display.getHeight() : height;
} else {
Point size = new Point();
display.getSize(size);
w = width < 0 ?size.x: width;
h = height < 0 ?size.y:height;
}
rootView.measure(View.MeasureSpec.makeMeasureSpec(w, View.MeasureSpec.EXACTLY),
View.MeasureSpec.makeMeasureSpec(h, View.MeasureSpec.EXACTLY));
rootView.layout(0, 0, rootView.getMeasuredWidth(), rootView.getMeasuredHeight());
rootView.setDrawingCacheEnabled(true);
rootView.buildDrawingCache();
Bitmap bmp = rootView.getDrawingCache();
return bmp;
}
and for saving image to gallery
import android.content.ContentResolver;
import android.content.ContentUris;
import android.content.ContentValues;
import android.graphics.Bitmap;
import android.graphics.Matrix;
import android.net.Uri;
import android.provider.MediaStore;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.OutputStream;
public class SaveToGalary {
public static final String insertImage(ContentResolver cr, Bitmap source, String title, String description) {
ContentValues values = new ContentValues();
values.put(MediaStore.Images.Media.TITLE, title);
values.put(MediaStore.Images.Media.DISPLAY_NAME, title);
values.put(MediaStore.Images.Media.DESCRIPTION, description);
values.put(MediaStore.Images.Media.MIME_TYPE, "image/png");
// Add the date meta data to ensure the image is added at the front of the gallery
values.put(MediaStore.Images.Media.DATE_ADDED, System.currentTimeMillis());
values.put(MediaStore.Images.Media.DATE_TAKEN, System.currentTimeMillis());
Uri url = null;
String stringUrl = null; /* value to be returned */
try {
url = cr.insert(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, values);
if (source != null) {
OutputStream imageOut = cr.openOutputStream(url);
try {
source.compress(Bitmap.CompressFormat.PNG, 100, imageOut);
} finally {
imageOut.close();
}
long id = ContentUris.parseId(url);
// Wait until MINI_KIND thumbnail is generated.
Bitmap miniThumb = MediaStore.Images.Thumbnails.getThumbnail(cr, id, MediaStore.Images.Thumbnails.MINI_KIND, null);
// This is for backward compatibility.
storeThumbnail(cr, miniThumb, id, 50F, 50F, MediaStore.Images.Thumbnails.MICRO_KIND);
} else {
cr.delete(url, null, null);
url = null;
}
} catch (Exception e) {
if (url != null) {
cr.delete(url, null, null);
url = null;
}
}
if (url != null) {
stringUrl = url.toString();
}
return stringUrl;
}
/**
* A copy of the Android internals StoreThumbnail method, it used with the insertImage to
* populate the android.provider.MediaStore.Images.Media#insertImage with all the correct
* meta data. The StoreThumbnail method is private so it must be duplicated here.
* @see android.provider.MediaStore.Images.Media (StoreThumbnail private method)
*/
private static final Bitmap storeThumbnail(
ContentResolver cr,
Bitmap source,
long id,
float width,
float height,
int kind) throws FileNotFoundException {
// create the matrix to scale it
Matrix matrix = new Matrix();
float scaleX = width / source.getWidth();
float scaleY = height / source.getHeight();
matrix.setScale(scaleX, scaleY);
Bitmap thumb = Bitmap.createBitmap(source, 0, 0,
source.getWidth(),
source.getHeight(), matrix,
true
);
ContentValues values = new ContentValues(4);
values.put(MediaStore.Images.Thumbnails.KIND,kind);
values.put(MediaStore.Images.Thumbnails.IMAGE_ID,(int)id);
values.put(MediaStore.Images.Thumbnails.HEIGHT,thumb.getHeight());
values.put(MediaStore.Images.Thumbnails.WIDTH,thumb.getWidth());
Uri url = cr.insert(MediaStore.Images.Thumbnails.EXTERNAL_CONTENT_URI, values);
try {
OutputStream thumbOut = cr.openOutputStream(url);
thumb.compress(Bitmap.CompressFormat.JPEG, 100, thumbOut);
thumbOut.close();
return thumb;
} catch (FileNotFoundException ex) {
return null;
} catch (IOException ex) {
return null;
}
}
}