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Android QuickContactBadge with letters like Android Lollipop

I use a function to generate these images.

public static Bitmap
generateCircleBitmap(Context context, int
circleColor, float diameterDP, String text){
    final int textColor = 0xffffffff;

    DisplayMetrics metrics =
    float diameterPixels = diameterDP *
(metrics.densityDpi / 160f);
    float radiusPixels = diameterPixels/2;

    // Create the bitmap
    Bitmap output = Bitmap.createBitmap((int)
diameterPixels, (int) diameterPixels,

    // Create the canvas to draw on
    Canvas canvas = new Canvas(output);
    canvas.drawARGB(0, 0, 0, 0);

    // Draw the circle
    final Paint paintC = new Paint();
    canvas.drawCircle(radiusPixels, radiusPixels,
radiusPixels, paintC);

    // Draw the text
    if (text != null && text.length() >
0) {
        final Paint paintT = new Paint();
        paintT.setTextSize(radiusPixels * 2);
        Typeface typeFace =
        final Rect textBounds = new Rect();
        paintT.getTextBounds(text, 0,
text.length(), textBounds);
        canvas.drawText(text, radiusPixels -
textBounds.exactCenterX(), radiusPixels -
textBounds.exactCenterY(), paintT);

    return output;

I pass the contact's name into the following getMaterialColor function to select a color.

private static List<Integer>
materialColors = Arrays.asList(

public static int getMaterialColor(Object key) {
    return material.get(Math.abs(key.hashCode()) %

Categories : Android

Related to : Android QuickContactBadge with letters like Android Lollipop
Android Lollipop preference
It' s simple. Just apply the to your activity and put your PreferenceFragment in that activity if you use the Api level >= 11. EDIT for the lastest supoort libary appcompat-v7, google provides AppCompatDelegate to do the trick, here is the sample code from google.

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Cannot get foreground activity name in Android Lollipop 5.0 only
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The package name of Lollipop's dialer is (on Nexus devices at least). If you really want to hardcode the package name, you may have to detect which dialer is available on the device.

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Android 5 Lollipop SQLite Performance
Sqlite 3.8 introduced the Next Generation Query Planner. It may make different choices, but is supposed to be better. (I'm assuming here that the query plans for your query differ in a significant way between sqlite versions. You've only posted one of them.) Allow me to quote an excerpt from the docs on the new planner, "Hazards of upgrading to NGQP": But as with any query planner change, up

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Android lollipop error code -505 during installation app
Let me guess - you your apps were made with adobe air? It's a bug google introduced with lollipop. Its related to the SHA1 generation from some certificates. See:

Categories : Android
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