ViewBadger为其他View添加角标
项目地址:https://github.com/jgilfelt/android-viewbadger
以前都是自己写的,一不小心网上找到这个,觉得不错,以后直接copy了,方便快捷!
package com.readystatesoftware.viewbadger;import android.content.Context;import android.content.res.Resources;import android.graphics.Color;import android.graphics.Typeface;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.TabWidget;import android.widget.TextView;/** * A simple text label view that can be applied as a "badge" to any given {@link android.view.View}. * This class is intended to be instantiated at runtime rather than included in XML layouts. * * @author Jeff Gilfelt */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 defaultsbadgePosition = 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 containertarget = ((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 ViewGroupViewGroup 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? * */@Overridepublic 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;}}
package viewbadger.demo;import android.app.TabActivity;import android.content.Context;import android.graphics.Color;import android.os.Bundle;import android.view.LayoutInflater;import android.view.View;import android.view.View.OnClickListener;import android.view.ViewGroup;import android.view.animation.BounceInterpolator;import android.view.animation.TranslateAnimation;import android.widget.BaseAdapter;import android.widget.Button;import android.widget.ListView;import android.widget.TabHost;import android.widget.TabWidget;import android.widget.TextView;import android.widget.Toast;import com.readystatesoftware.viewbadger.BadgeView;import com.readystatesoftware.viewbadger.R;public class DemoActivity extends TabActivity { private static final String[] DATA = Cheeses.sCheeseStrings;Button btnPosition;Button btnColour;Button btnAnim1;Button btnAnim2;Button btnCustom;Button btnClick;Button btnTab;Button btnIncrement;ListView listDemo;BadgeView badge1;BadgeView badge2;BadgeView badge3;BadgeView badge4;BadgeView badge5;BadgeView badge6;BadgeView badge7;BadgeView badge8; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); final TabHost tabHost = getTabHost(); tabHost.addTab(tabHost.newTabSpec("demos") .setIndicator("Badge Demos") .setContent(R.id.tab1)); tabHost.addTab(tabHost.newTabSpec("adapter") .setIndicator("List Adapter") .setContent(R.id.tab2)); tabHost.addTab(tabHost.newTabSpec("tests") .setIndicator("Layout Tests") .setContent(R.id.tab3)); // *** default badge *** View target = findViewById(R.id.default_target);BadgeView badge = new BadgeView(this, target);badge.setText("1");badge.show(); // *** set position *** btnPosition = (Button) findViewById(R.id.position_target); badge1 = new BadgeView(this, btnPosition); badge1.setText("12"); badge1.setBadgePosition(BadgeView.POSITION_CENTER); btnPosition.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {badge1.toggle();}}); // *** badge/text size & colour *** btnColour = (Button) findViewById(R.id.colour_target); badge2 = new BadgeView(this, btnColour); badge2.setText("New!"); badge2.setTextColor(Color.BLUE); badge2.setBadgeBackgroundColor(Color.YELLOW); badge2.setTextSize(12); btnColour.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {badge2.toggle();}}); // *** default animation *** btnAnim1 = (Button) findViewById(R.id.anim1_target); badge3 = new BadgeView(this, btnAnim1); badge3.setText("84"); btnAnim1.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {badge3.toggle(true);}}); // *** custom animation *** btnAnim2 = (Button) findViewById(R.id.anim2_target); badge4 = new BadgeView(this, btnAnim2); badge4.setText("123"); badge4.setBadgePosition(BadgeView.POSITION_TOP_LEFT); badge4.setBadgeMargin(15, 10); badge4.setBadgeBackgroundColor(Color.parseColor("#A4C639")); btnAnim2.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {TranslateAnimation anim = new TranslateAnimation(-100, 0, 0, 0); anim.setInterpolator(new BounceInterpolator()); anim.setDuration(1000); badge4.toggle(anim, null);}}); // *** custom background *** btnCustom = (Button) findViewById(R.id.custom_target); badge5 = new BadgeView(this, btnCustom); badge5.setText("37"); badge5.setBackgroundResource(R.drawable.badge_ifaux); badge5.setTextSize(16); btnCustom.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {badge5.toggle(true);}}); // *** clickable badge *** btnClick = (Button) findViewById(R.id.click_target); badge6 = new BadgeView(this, btnClick); badge6.setText("click me"); badge6.setBadgeBackgroundColor(Color.BLUE); badge6.setTextSize(16); badge6.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {Toast.makeText(DemoActivity.this, "clicked badge", Toast.LENGTH_SHORT).show();}}); btnClick.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {badge6.toggle();}}); // *** tab *** TabWidget tabs = (TabWidget) findViewById(android.R.id.tabs); btnTab = (Button) findViewById(R.id.tab_btn); badge7 = new BadgeView(this, tabs, 0); badge7.setText("5"); btnTab.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {badge7.toggle();}}); // *** increment *** btnIncrement = (Button) findViewById(R.id.increment_target); badge8 = new BadgeView(this, btnIncrement); badge8.setText("0"); btnIncrement.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {if (badge8.isShown()) {badge8.increment(1);} else {badge8.show();}}}); // *** list adapter **** listDemo = (ListView) findViewById(R.id.tab2); listDemo.setAdapter(new BadgeAdapter(this)); }@Overrideprotected void onResume() {super.onResume();BadgeView badge;View target;// *** test linear layout container ***target = findViewById(R.id.linear_target);badge = new BadgeView(this, target);badge.setText("OK");badge.show();// *** test relative layout container ***target = findViewById(R.id.relative_target);badge = new BadgeView(this, target);badge.setText("OK");badge.show();// *** test frame layout container ***target = findViewById(R.id.frame_target);badge = new BadgeView(this, target);badge.setText("OK");badge.show();// *** test table layout container ***target = findViewById(R.id.table_target);badge = new BadgeView(this, target);badge.setText("OK");badge.show();// *** test linear layout ***target = findViewById(R.id.linear_group_target);badge = new BadgeView(this, target);badge.setText("OK");badge.show();// *** test relative layout ***target = findViewById(R.id.relative_group_target);badge = new BadgeView(this, target);badge.setText("OK");badge.show();// *** test frame layout ***target = findViewById(R.id.frame_group_target);badge = new BadgeView(this, target);badge.setText("OK");badge.show();// *** test table layout ***target = findViewById(R.id.tablerow_group_target);badge = new BadgeView(this, target);badge.setText("OK");badge.show();} private static class BadgeAdapter extends BaseAdapter { private LayoutInflater mInflater; private Context mContext; private static final int droidGreen = Color.parseColor("#A4C639"); public BadgeAdapter(Context context) { mInflater = LayoutInflater.from(context); mContext = context; } public int getCount() { return DATA.length; } public Object getItem(int position) { return position; } public long getItemId(int position) { return position; } public View getView(int position, View convertView, ViewGroup parent) { ViewHolder holder; if (convertView == null) { convertView = mInflater.inflate(android.R.layout.simple_list_item_2, null); holder = new ViewHolder(); holder.text = (TextView) convertView.findViewById(android.R.id.text1); holder.badge = new BadgeView(mContext, holder.text); holder.badge.setBadgeBackgroundColor(droidGreen); holder.badge.setTextColor(Color.BLACK); convertView.setTag(holder); } else { holder = (ViewHolder) convertView.getTag(); } holder.text.setText(DATA[position]); if (position % 3 == 0) { holder.badge.setText(String.valueOf(position)); holder.badge.show(); } else { holder.badge.hide(); } return convertView; } static class ViewHolder { TextView text; BadgeView badge; } } }