How to program backgound image wallpaper android development

Here we are going to explain about, how set and fix an image as wallpaper and changing its properties in an android application.It is simple to set an image as a wallpaper, there are different small problems that need to be addressed to sharply fix a wallpaper.This app will enables you to generate a wallpaper for each day which replaces automatically every morning, this tip helps to a number of points which will help in setting the wallpaper.

Create activity to Get an image from your Album: Android image operations are taking places by a class called Intent. Intent is an abstract description of an opration that will happend.Intent allows to peform possible opration mean while in the code.

Intent objintent = new Intent(Intent.ACTION_PICK, android.provider.MediaStore.Images.Media.INTERNAL_CONTENT_URI); startActivityForResult(objintent, RESULT_LOAD_IMAGE);

Set your picture from Album: it is setting the image that you have selected for further process.

@Override protected void onActivityResult(int CodeForRequest, int CodeForResult, Intent objContent) { super.onActivityResult(CodeForRequest, CodeForResult, objContent); try { if (CodeForRequest == RESULT_LOAD_IMAGE && CodeForResult == RESULT_OK && null != objContent) { Uri YourImageBySelection = objContent.getData(); String[] SelectedImagePath = { MediaStore.Images.Media.DATA }; Cursor cursor = getContentResolver().query( YourImageBySelection,SelectedImagePath, null, null, null); cursor.moveToFirst(); int NumberOfColumn = cursor.getColumnIndex(SelectedImagePath[0]); String picturePath = cursor.getString(NumberOfColumn); cursor.close(); ImageButton btnImage = (ImageButton) findViewById(ButtonIdToSet); File newFile = new File(picturePath); if(newFile.exists()) { Bitmap bmpBitmap = decodeFile(newFile, btnImage.getWidth(),btnImage.getHeight()); btnImage.setImageBitmap(bmpBitmap); } } } catch (Exception Ex) { Ex.printStackTrace(); } }

Android Bitmap properties Setting:-

Setting hight and width properties fo your bitmap for wallpaper:Creating a new file and set hight and width of that file for pic. enabling the bitmapfactory options.This will result an images size ratio at last.

public static Bitmap decodeFile(File NewFile, int WidthBitmap, int HightBitmap){ final BitmapFactory.Options properties = new BitmapFactory.Options(); properties.inJustDecodeBounds = true; BitmapFactory.decodeFile(NewFile.getPath(), properties); properties.ArrangedSize = ArrangedInSizeByme(properties, WidthBitmap, HightBitmap); properties.inJustDecodeBounds = false; return BitmapFactory.decodeFile(NewFile.getPath(), properties); } private static int ArrangedInSizeByme( BitmapFactory.Options properties, int WidthBitmap, int HightBitmap) { final int iHight = properties.outHeight; final int iWidth = properties.outWidth; int ArrangedSize = 1; if (iHight > HightBitmap || iWidth > WidthBitmap) { final int hightManaged = Math.round((float) iHight / (float) HightBitmap); final int widthManaged = Math.round((float) iWidth / (float) WidthBitmap); ArrangedSize = hightManaged < widthManaged ? hightManaged : widthManaged; } return ArrangedSize; }

Before setting the picture that you have selected as wallpaper, you need to maintanin and manage the display prperties of your android device. And then set the image as wallpaper of your device.
//Managed Display parameters for setting image DisplayMetrics DMetricsDisplay = appContext.getResources().getDisplayMetrics(); int iHight = DMetricsDisplay.heightPixels; int iWidth = DMetricsDisplay.widthPixels; //Bitmap Setting Bitmap NewBitmapSetting = decodeFile(NewFile,iWidth,iHight); myWallpaperManager.suggestDesiredDimensions(iWidth, iHight); myWallpaperManager.setBitmap(NewBitmapSetting);  
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