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结合闲时整理(3)------消息提示标签 BadgeView和闲时整理(4)--圆形TextView修改整理了CircleBadgeView这个类,标签是圆形的了,以前的标签是圆角矩形。
package com.glory.room.view; import android.content.Context; import android.content.res.Resources; import android.graphics.Canvas; import android.graphics.Color; import android.graphics.Paint; import android.graphics.PaintFlagsDrawFilter; import android.graphics.Typeface; import android.graphics.drawable.ShapeDrawable; import android.graphics.drawable.shapes.OvalShape; 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.ViewParent; import android.view.ViewGroup.LayoutParams; 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.TabWidget; import android.widget.TextView; public class CircleBadgeView 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; 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.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 badgeMargin; private int badgeColor; private boolean isShown; //private ShapeDrawable badgeBg; private int targetTabIndex; private Paint mBgPaint = new Paint(); PaintFlagsDrawFilter pfd = new PaintFlagsDrawFilter(0, Paint.ANTI_ALIAS_FLAG|Paint.FILTER_BITMAP_FLAG); public CircleBadgeView(Context context) { this(context, (AttributeSet) null, android.R.attr.textViewStyle); mBgPaint.setColor(Color.WHITE); mBgPaint.setAntiAlias(true); } public CircleBadgeView(Context context, AttributeSet attrs) { this(context, attrs, android.R.attr.textViewStyle); mBgPaint.setColor(Color.WHITE); mBgPaint.setAntiAlias(true); } /** * 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 CircleBadgeView(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 CircleBadgeView(Context context, TabWidget target, int index) { this(context, null, android.R.attr.textViewStyle, target, index); } public CircleBadgeView(Context context, AttributeSet attrs, int defStyle) { this(context, attrs, defStyle, null, 0); } public CircleBadgeView(Context context, AttributeSet attrs, int defStyle, View target, int tabIndex) { super(context, attrs, defStyle); init(context, target, tabIndex); } @Override protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { // TODO Auto-generated method stub super.onMeasure(widthMeasureSpec, heightMeasureSpec); int measuredWidth = getMeasuredWidth(); int measuredHeight = getMeasuredHeight(); int max = Math.max(measuredWidth, measuredHeight); setMeasuredDimension(max, max); } @Override public void setBackgroundColor(int color) { // TODO Auto-generated method stub //super.setBackgroundColor(Color.RED); mBgPaint.setColor(color); } @Override public void draw(Canvas canvas) { // TODO Auto-generated method stub canvas.setDrawFilter(pfd); canvas.drawCircle(getWidth()/2, getHeight()/2, Math.max(getWidth(), getHeight())/2, mBgPaint); super.draw(canvas); } 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); 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); OvalShape os = new OvalShape(); 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(badgeMargin, badgeMargin, 0, 0); break; case POSITION_TOP_RIGHT: lp.gravity = Gravity.RIGHT | Gravity.TOP; lp.setMargins(0, badgeMargin, badgeMargin, 0); break; case POSITION_BOTTOM_LEFT: lp.gravity = Gravity.LEFT | Gravity.BOTTOM; lp.setMargins(badgeMargin, 0, 0, badgeMargin); break; case POSITION_BOTTOM_RIGHT: lp.gravity = Gravity.RIGHT | Gravity.BOTTOM; lp.setMargins(0, 0, badgeMargin, badgeMargin); 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. * */ 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. * */ public void setBadgePosition(int layoutPosition) { this.badgePosition = layoutPosition; } /** * Returns the horizontal/vertical margin from the target View that is applied to this badge. * */ public int getBadgeMargin() { return badgeMargin; } /** * 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.badgeMargin = badgeMargin; } /** * 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; } }
使用案例:
private void initView() { login = (Button) findViewById(R.id.login); badge1 = new CircleBadgeView(this, login); badge1.setText("10"); badge1.setBackgroundColor(Color.RED);//设置背景颜色 badge1.setTextSize(15);//设置文字大小 badge1.setGravity(Gravity.CENTER);//设置文字居中 badge1.show(); }
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原文地址:http://blog.csdn.net/liu1164316159/article/details/42916833