1、对应的控件
import android.content.Context;import android.content.res.Resources;import android.graphics.Color;import android.graphics.drawable.ShapeDrawable;import android.graphics.drawable.shapes.RoundRectShape;import android.util.AttributeSet;import android.util.TypedValue;import android.view.Gravity;import android.view.View;import android.view.ViewGroup;import android.view.ViewGroup.LayoutParams;import android.view.ViewParent;import android.view.animation.AccelerateInterpolator;import android.view.animation.AlphaAnimation;import android.view.animation.Animation;import android.view.animation.DecelerateInterpolator;import android.widget.FrameLayout;import android.widget.ImageView;import android.widget.TabWidget;public class BadgeView extends ImageView { 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; PRivate static final int DEFAULT_MARGIN_Dip = 5; public int MARGIN_LEFT = DEFAULT_MARGIN_DIP; public int MARGIN_TOP = DEFAULT_MARGIN_DIP; public int MARGIN_RIGHT = DEFAULT_MARGIN_DIP; public int MARGIN_BOTTOM = DEFAULT_MARGIN_DIP; 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.RED; private Animation fadeIn; private Animation fadeOut; private Context context; private View target; private int badgePosition; private int badgeMargin; 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); } public BadgeView(Context context, View target) { this(context, null, android.R.attr.textViewStyle, target, 0); } 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; badgeMargin = dipToPixels(DEFAULT_MARGIN_DIP); MARGIN_LEFT = dipToPixels(DEFAULT_MARGIN_DIP); MARGIN_TOP = dipToPixels(DEFAULT_MARGIN_DIP); MARGIN_RIGHT = dipToPixels(DEFAULT_MARGIN_DIP); MARGIN_BOTTOM = dipToPixels(DEFAULT_MARGIN_DIP); 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.MATCH_PARENT, LayoutParams.MATCH_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(); } } public void show() { show(false, null); } public void show(boolean animate) { show(animate, fadeIn); } public void show(Animation anim) { show(true, anim); } public void hide() { hide(false, null); } public void hide(boolean animate) { hide(animate, fadeOut); } public void hide(Animation anim) { hide(true, anim); } public void toggle() { toggle(false, null, null); } public void toggle(boolean animate) { toggle(animate, fadeIn, fadeOut); } 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); } } /*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; }*/ /*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(MARGIN_LEFT, MARGIN_TOP, 0, 0); break; case POSITION_TOP_RIGHT: lp.gravity = Gravity.RIGHT | Gravity.TOP; lp.setMargins(0, MARGIN_TOP, MARGIN_RIGHT, 0); break; case POSITION_BOTTOM_LEFT: lp.gravity = Gravity.LEFT | Gravity.BOTTOM; lp.setMargins(MARGIN_LEFT, 0, 0, MARGIN_BOTTOM); break; case POSITION_BOTTOM_RIGHT: lp.gravity = Gravity.RIGHT | Gravity.BOTTOM; lp.setMargins(0, 0, MARGIN_RIGHT, MARGIN_BOTTOM); break; default: break; } setLayoutParams(lp); } public View getTarget() { return target; } @Override public boolean isShown() { return isShown; } public int getBadgePosition() { return badgePosition; } public void setBadgePosition(int layoutPosition) { this.badgePosition = layoutPosition; } public int getBadgeMargin() { return badgeMargin; } public void setBadgeMargin(int badgeMargin) { this.badgeMargin = dipToPixels(badgeMargin); } public void setBadgeMargin(int badgeMarginLeft, int badgeMarginTop, int badgeMarginRight, int badgeMarginBottom) { this.MARGIN_LEFT = dipToPixels(badgeMarginLeft); this.MARGIN_TOP = dipToPixels(badgeMarginTop); this.MARGIN_RIGHT = dipToPixels(badgeMarginRight); this.MARGIN_BOTTOM = dipToPixels(badgeMarginBottom); } public int getBadgeBackgroundColor() { return badgeColor; } 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; }}
2、对应的调用
mBadge = new BadgeView(this, personTab); mBadge.setBackgroundResource(R.drawable.coolyou_info_tip); mBadge.setBadgeMargin(0, 8, 13, 0);
mBadge .show()
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