Bage Textview in Android

Here is example of custom Badge Views




Here is code for Calling 

final BadgeView but = new com.mj.util.BadgeView(context ,  view);
but.setText("11");
but.setBadgeBackgroundColor(Color.parseColor("#C47D15"));
but.setBadgePosition(com.mj.util.BadgeView.POSITION_TOP_RIGHT);
but.setBadgeMargin(1, 10);
but.show();

Here is dynamic creation of badge using textview

BadgeView .java

public class BadgeView extends TextView {

public static final int POSITION_TOP_LEFT = 1;
public static final int POSITION_TOP_RIGHT = 2;
public static final int POSITION_BOTTOM_LEFT = 3;
public static final int POSITION_BOTTOM_RIGHT = 4;
public static final int POSITION_CENTER = 5;

private static final int DEFAULT_MARGIN_DIP = 5;
private static final int DEFAULT_LR_PADDING_DIP = 5;
private static final int DEFAULT_CORNER_RADIUS_DIP = 8;
private static final int DEFAULT_POSITION = POSITION_TOP_RIGHT;
private static final int DEFAULT_BADGE_COLOR = Color.parseColor("#CCFF0000"); //Color.RED;
private static final int DEFAULT_TEXT_COLOR = Color.WHITE;

private static Animation fadeIn;
private static Animation fadeOut;

private Context context;
private View target;

private int badgePosition;
private int badgeMarginH;
private int badgeMarginV;
private int badgeColor;

private boolean isShown;

private ShapeDrawable badgeBg;

private int targetTabIndex;

public BadgeView(Context context) {
this(context, (AttributeSet) null, android.R.attr.textViewStyle);
}

public BadgeView(Context context, AttributeSet attrs) {
this(context, attrs, android.R.attr.textViewStyle);
}

/**
     * Constructor -
     *
     * create a new BadgeView instance attached to a target {@link android.view.View}.
     *
     * @param context context for this view.
     * @param target the View to attach the badge to.
     */
public BadgeView(Context context, View target) {
this(context, null, android.R.attr.textViewStyle, target, 0);
}

/**
     * Constructor -
     *
     * create a new BadgeView instance attached to a target {@link android.widget.TabWidget}
     * tab at a given index.
     *
     * @param context context for this view.
     * @param target the TabWidget to attach the badge to.
     * @param index the position of the tab within the target.
     */
public BadgeView(Context context, TabWidget target, int index) {
this(context, null, android.R.attr.textViewStyle, target, index);
}

public BadgeView(Context context, AttributeSet attrs, int defStyle) {
this(context, attrs, defStyle, null, 0);
}

public BadgeView(Context context, AttributeSet attrs, int defStyle, View target, int tabIndex) {
super(context, attrs, defStyle);
init(context, target, tabIndex);
}

private void init(Context context, View target, int tabIndex) {

this.context = context;
this.target = target;
this.targetTabIndex = tabIndex;

// apply defaults
badgePosition = DEFAULT_POSITION;
badgeMarginH = dipToPixels(DEFAULT_MARGIN_DIP);
badgeMarginV = badgeMarginH;
badgeColor = DEFAULT_BADGE_COLOR;

setTypeface(Typeface.DEFAULT_BOLD);
int paddingPixels = dipToPixels(DEFAULT_LR_PADDING_DIP);
setPadding(paddingPixels, 0, paddingPixels, 0);
setTextColor(DEFAULT_TEXT_COLOR);

fadeIn = new AlphaAnimation(0, 1);
fadeIn.setInterpolator(new DecelerateInterpolator());
fadeIn.setDuration(200);

fadeOut = new AlphaAnimation(1, 0);
fadeOut.setInterpolator(new AccelerateInterpolator());
fadeOut.setDuration(200);

isShown = false;

if (this.target != null) {
applyTo(this.target);
} else {
show();
}

}

private void applyTo(View target) {

LayoutParams lp = target.getLayoutParams();
ViewParent parent = target.getParent();
FrameLayout container = new FrameLayout(context);

if (target instanceof TabWidget) {

// set target to the relevant tab child container
target = ((TabWidget) target).getChildTabViewAt(targetTabIndex);
this.target = target;

((ViewGroup) target).addView(container,
new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT));

this.setVisibility(View.GONE);
container.addView(this);

} else {

// TODO verify that parent is indeed a ViewGroup
ViewGroup group = (ViewGroup) parent;
int index = group.indexOfChild(target);

group.removeView(target);
group.addView(container, index, lp);

container.addView(target);

this.setVisibility(View.GONE);
container.addView(this);

group.invalidate();

}

}

/**
     * Make the badge visible in the UI.
     *
     */
public void show() {
show(false, null);
}

/**
     * Make the badge visible in the UI.
     *
     * @param animate flag to apply the default fade-in animation.
     */
public void show(boolean animate) {
show(animate, fadeIn);
}

/**
     * Make the badge visible in the UI.
     *
     * @param anim Animation to apply to the view when made visible.
     */
public void show(Animation anim) {
show(true, anim);
}

/**
     * Make the badge non-visible in the UI.
     *
     */
public void hide() {
hide(false, null);
}

/**
     * Make the badge non-visible in the UI.
     *
     * @param animate flag to apply the default fade-out animation.
     */
public void hide(boolean animate) {
hide(animate, fadeOut);
}

/**
     * Make the badge non-visible in the UI.
     *
     * @param anim Animation to apply to the view when made non-visible.
     */
public void hide(Animation anim) {
hide(true, anim);
}

/**
     * Toggle the badge visibility in the UI.
     *
     */
public void toggle() {
toggle(false, null, null);
}

/**
     * Toggle the badge visibility in the UI.
     *
     * @param animate flag to apply the default fade-in/out animation.
     */
public void toggle(boolean animate) {
toggle(animate, fadeIn, fadeOut);
}

/**
     * Toggle the badge visibility in the UI.
     *
     * @param animIn Animation to apply to the view when made visible.
     * @param animOut Animation to apply to the view when made non-visible.
     */
public void toggle(Animation animIn, Animation animOut) {
toggle(true, animIn, animOut);
}

private void show(boolean animate, Animation anim) {
if (getBackground() == null) {
if (badgeBg == null) {
badgeBg = getDefaultBackground();
}
setBackgroundDrawable(badgeBg);
}
applyLayoutParams();

if (animate) {
this.startAnimation(anim);
}
this.setVisibility(View.VISIBLE);
isShown = true;
}

private void hide(boolean animate, Animation anim) {
this.setVisibility(View.GONE);
if (animate) {
this.startAnimation(anim);
}
isShown = false;
}

private void toggle(boolean animate, Animation animIn, Animation animOut) {
if (isShown) {
hide(animate && (animOut != null), animOut);
} else {
show(animate && (animIn != null), animIn);
}
}

/**
     * Increment the numeric badge label. If the current badge label cannot be converted to
     * an integer value, its label will be set to "0".
     *
     * @param offset the increment offset.
     */
public int increment(int offset) {
CharSequence txt = getText();
int i;
if (txt != null) {
try {
i = Integer.parseInt(txt.toString());
} catch (NumberFormatException e) {
i = 0;
}
} else {
i = 0;
}
i = i + offset;
setText(String.valueOf(i));
return i;
}

/**
     * Decrement the numeric badge label. If the current badge label cannot be converted to
     * an integer value, its label will be set to "0".
     *
     * @param offset the decrement offset.
     */
public int decrement(int offset) {
return increment(-offset);
}

private ShapeDrawable getDefaultBackground() {

int r = dipToPixels(DEFAULT_CORNER_RADIUS_DIP);
float[] outerR = new float[] {r, r, r, r, r, r, r, r};
       
RoundRectShape rr = new RoundRectShape(outerR, null, null);
ShapeDrawable drawable = new ShapeDrawable(rr);
drawable.getPaint().setColor(badgeColor);

return drawable;

}

private void applyLayoutParams() {

FrameLayout.LayoutParams lp = new FrameLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);

switch (badgePosition) {
case POSITION_TOP_LEFT:
lp.gravity = Gravity.LEFT | Gravity.TOP;
lp.setMargins(badgeMarginH, badgeMarginV, 0, 0);
break;
case POSITION_TOP_RIGHT:
lp.gravity = Gravity.RIGHT | Gravity.TOP;
lp.setMargins(0, badgeMarginV, badgeMarginH, 0);
break;
case POSITION_BOTTOM_LEFT:
lp.gravity = Gravity.LEFT | Gravity.BOTTOM;
lp.setMargins(badgeMarginH, 0, 0, badgeMarginV);
break;
case POSITION_BOTTOM_RIGHT:
lp.gravity = Gravity.RIGHT | Gravity.BOTTOM;
lp.setMargins(0, 0, badgeMarginH, badgeMarginV);
break;
case POSITION_CENTER:
lp.gravity = Gravity.CENTER;
lp.setMargins(0, 0, 0, 0);
break;
default:
break;
}

setLayoutParams(lp);

}

/**
     * Returns the target View this badge has been attached to.
     *
     */
public View getTarget() {
return target;
}

/**
     * Is this badge currently visible in the UI?
     *
     */
@Override
public boolean isShown() {
return isShown;
}

/**
     * Returns the positioning of this badge.
     *
     * one of POSITION_TOP_LEFT, POSITION_TOP_RIGHT, POSITION_BOTTOM_LEFT, POSITION_BOTTOM_RIGHT, POSTION_CENTER.
     *
     */
public int getBadgePosition() {
return badgePosition;
}

/**
     * Set the positioning of this badge.
     *
     * @param layoutPosition one of POSITION_TOP_LEFT, POSITION_TOP_RIGHT, POSITION_BOTTOM_LEFT, POSITION_BOTTOM_RIGHT, POSTION_CENTER.
     *
     */
public void setBadgePosition(int layoutPosition) {
this.badgePosition = layoutPosition;
}

/**
     * Returns the horizontal margin from the target View that is applied to this badge.
     *
     */
public int getHorizontalBadgeMargin() {
return badgeMarginH;
}

/**
     * Returns the vertical margin from the target View that is applied to this badge.
     *
     */
public int getVerticalBadgeMargin() {
return badgeMarginV;
}

/**
     * Set the horizontal/vertical margin from the target View that is applied to this badge.
     *
     * @param badgeMargin the margin in pixels.
     */
public void setBadgeMargin(int badgeMargin) {
this.badgeMarginH = badgeMargin;
this.badgeMarginV = badgeMargin;
}

/**
     * Set the horizontal/vertical margin from the target View that is applied to this badge.
     *
     * @param horizontal margin in pixels.
     * @param vertical margin in pixels.
     */
public void setBadgeMargin(int horizontal, int vertical) {
this.badgeMarginH = horizontal;
this.badgeMarginV = vertical;
}

/**
     * Returns the color value of the badge background.
     *
     */
public int getBadgeBackgroundColor() {
return badgeColor;
}

/**
     * Set the color value of the badge background.
     *
     * @param badgeColor the badge background color.
     */
public void setBadgeBackgroundColor(int badgeColor) {
this.badgeColor = badgeColor;
badgeBg = getDefaultBackground();
}

private int dipToPixels(int dip) {
Resources r = getResources();
float px = TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, dip, r.getDisplayMetrics());
return (int) px;
}

}