I guess that’s a good way to go. The only downside I can think of is the resource overhead on small scale devices and possible artifacts because of the downscaling. Actually at this year’s Google IO Chris Pruett recommended embedding only high resolution assets and let opengl handle the scaling.
You can achieve coloring the drawableleft on a button with this method: Step 1: Create a drawable resource file with bitmap as parent element as shown below and name it as ic_action_landscape.xml under the drawable folder <?xml version=”1.0″ encoding=”utf-8″?> <bitmap xmlns:android=”http://schemas.android.com/apk/res/android” android:src=”https://stackoverflow.com/questions/30938620/@android:drawable/ic_btn_speak_now” android:tint=”@color/white” /> Step 2: Create your Button control in your layout as below … Read more
MDPI: 48×48 HDPI: 72×72 XHDPI: 96×96 XXHDPI: 144×144 XXXHDPI: 192×192 to create an icon for different densities, you should follow the 2:3:4:6:8 scaling ratio between the five primary densities (medium, high, x-high, xx-high, and xxx-high respectively) – developer.android.com
Ok i solved my problem. I post the example code: Path p; Region r; @Override public void onDraw(Canvas canvas) { p = new Path(); p.moveTo(50, 50); p.lineTo(100, 50); p.lineTo(100, 100); p.lineTo(80, 100); p.close(); canvas.drawPath(p, paint); RectF rectF = new RectF(); p.computeBounds(rectF, true); r = new Region(); r.setPath(p, new Region((int) rectF.left, (int) rectF.top, (int) rectF.right, (int) … Read more
It’s normal that you see the same items as you scroll down the GridView because in the getView method you set the drawables for the ImageView only when the convertView is null(for example for the first elements that are seen when the GridView appear on the screen). If the convertView is not null, meaning you … Read more
the following will work: ih=imageView.getMeasuredHeight();//height of imageView iw=imageView.getMeasuredWidth();//width of imageView iH=imageView.getDrawable().getIntrinsicHeight();//original height of underlying image iW=imageView.getDrawable().getIntrinsicWidth();//original width of underlying image if (ih/iH<=iw/iW) iw=iW*ih/iH;//rescaled width of image within ImageView else ih= iH*iw/iW;//rescaled height of image within ImageView (iw x ih) now represents the actual rescaled (width x height) for the image within the view (in other … Read more
You can’t specify a percentage. You need to specify a Dimension value to it. android:width is defined here: http://developer.android.com/reference/android/R.attr.html#width : (emphasis mine) Must be a dimension value, which is a floating point number appended with a unit such as “14.5sp”. Available units are: px (pixels), dp (density-independent pixels), sp (scaled pixels based on preferred font … Read more
I would suggest to use @Codeversed solution, but if it doesn’t fit for you for some reason you can use my custom EditText implementation. Usual EditText representation: EditText with error: In few words: I’ve created custom xml state for error display. See related code below: InputEditText.java: import android.annotation.TargetApi; import android.content.Context; import android.graphics.drawable.Drawable; import android.os.Build; import … Read more
Use the <shape> tag to create a drawable in XML with rounded corners. (You can do other stuff with the shape tag like define a color gradient as well). Here’s a copy of a XML file I’m using in one of my apps to create a drawable with a white background, black border and rounded … Read more
Your Activity should have the method getResources. Do: Drawable myIcon = getResources().getDrawable( R.drawable.icon ); As of API version 21 this method is deprecated and can be replaced with: Drawable myIcon = AppCompatResources.getDrawable(context, R.drawable.icon); If you need to specify a custom theme, the following will apply it, but only if API is version 21 or greater: … Read more