Android桌面角标的适配确实是非常坑爹的需求。原生系统根本就没有这个功能，国内很多厂家效仿ios都自己定义了该功能。Android程序员就很苦逼，要适配很多机型。建议万不得已情况下还是不要进行这项工作。因为google的意思是让大家用notification（提示栏）即可，不过无妨，厉害的android第三方厂商可以通过在自定义的launcher（启动器）中操作来实现添加角标添加角标的原理就是发送一个broadcast（广播），在广播的intent中指定需要被添加角标的应用的packagename（包名），classname（类名），count（角标数目）。当然了，不同厂商的手机的角标操作的intent的action是不一样的。
1.原生系统（原生的Launcher ）,只能修改快捷方式，增加和删除都会有toast提示
2.小米 三星 索尼 华为 手机: 自定义的launcher: 发送显示未读消息数的action已经不同了。具体可以去看代码。。
手上没有那么多测试机...只测了vivo的(通过),提供给大家参考一下,还有如果个例方法不成功,你注意下num(未读消息的条数)的类型,建议打印一下manufacturer,然后去对应手机厂商的方法:
/*** * 在应用图标的快捷方式上加数字 * @param clazz 启动的activity * @param isShowNum 是否显示数字 * @param num 显示的数字：整型 * @param isStroke 是否加上边框 * */ public static void addNumShortCut(Context context, Class<?> clazz, boolean isShowNum, String num, boolean isStroke) { Log.e(TAG, "manufacturer=" + Build.MANUFACTURER); if (Build.MANUFACTURER.equalsIgnoreCase("Xiaomi")) { //小米 xiaoMiShortCut(context, clazz, num); } else if (Build.MANUFACTURER.equalsIgnoreCase("samsung")) { //三星 samsungShortCut(context, num); } else if (Build.MANUFACTURER.equalsIgnoreCase("vivo")) { //vivo vivoShortCut(context, num); } else {//其他原生系统手机 installRawShortCut(context, MainActivity.class, isShowNum, num, isStroke); } }
/*** * 在vivo应用图标的快捷方式上加数字<br> * @param context * @param num 显示的数字：大于99，为"99"，当为""时，不显示数字，相当于隐藏了)<br><br> * 注意点： * */ public static void vivoShortCut(Context context, String num) { Log.e(TAG, "vivoShortCut...."); Intent localIntent = new Intent("launcher.action.CHANGE_APPLICATION_NOTIFICATION_NUM"); localIntent.putExtra("packageName", context.getPackageName()); String launchClassName = context.getPackageManager().getLaunchIntentForPackage(context.getPackageName()).getComponent().getClassName(); localIntent.putExtra("className", launchClassName); if (TextUtils.isEmpty(num)) { num = ""; } else { int numInt = Integer.valueOf(num); if (numInt > 0) { if (numInt > 99) { num = "99"; } } else { num = "0"; } } localIntent.putExtra("notificationNum", Integer.parseInt(num)); context.sendBroadcast(localIntent); }
/*** * 在小米应用图标的快捷方式上加数字<br> * * * @param context * @param num 显示的数字：大于99，为"99"，当为""时，不显示数字，相当于隐藏了)<br><br> * * 注意点： * context.getPackageName()+"/."+clazz.getSimpleName() （这个是启动activity的路径）中的"/."不能缺少 * */ public static void xiaoMiShortCut(Context context, Class<?> clazz, String num) { Log.e(TAG, "xiaoMiShortCut...."); Intent localIntent = new Intent("android.intent.action.APPLICATION_MESSAGE_UPDATE"); localIntent.putExtra("android.intent.extra.update_application_component_name", context.getPackageName() + "/." + clazz.getSimpleName()); if (TextUtils.isEmpty(num)) { num = ""; } else { int numInt = Integer.valueOf(num); if (numInt > 0) { if (numInt > 99) { num = "99"; } } else { num = "0"; } } localIntent.putExtra("android.intent.extra.update_application_message_text", num); context.sendBroadcast(localIntent); }
/*** * 索尼手机：应用图标的快捷方式上加数字 * @param context * @param num */ public static void sonyShortCut(Context context, String num) { String activityName = getLaunchActivityName(context); if (activityName == null) { return; } Intent localIntent = new Intent(); int numInt = Integer.valueOf(num); boolean isShow = true; if (numInt < 1) { num = ""; isShow = false; } else if (numInt > 99) { num = "99"; } localIntent.putExtra("com.sonyericsson.home.intent.extra.badge.SHOW_MESSAGE", isShow); localIntent.setAction("com.sonyericsson.home.action.UPDATE_BADGE"); localIntent.putExtra("com.sonyericsson.home.intent.extra.badge.ACTIVITY_NAME", activityName); localIntent.putExtra("com.sonyericsson.home.intent.extra.badge.MESSAGE", num); localIntent.putExtra("com.sonyericsson.home.intent.extra.badge.PACKAGE_NAME", context.getPackageName()); context.sendBroadcast(localIntent); }
/*** * 三星手机：应用图标的快捷方式上加数字 * @param context * @param num */ public static void samsungShortCut(Context context, String num) { int numInt = Integer.valueOf(num); if (numInt < 1) { num = "0"; } else if (numInt > 99) { num = "99"; } String activityName = getLaunchActivityName(context); Intent localIntent = new Intent("android.intent.action.BADGE_COUNT_UPDATE"); localIntent.putExtra("badge_count", num); localIntent.putExtra("badge_count_package_name", context.getPackageName()); localIntent.putExtra("badge_count_class_name", activityName); context.sendBroadcast(localIntent); }下面我把整个类贴出来:
package com.vlvxing.app.utils; import android.content.ContentResolver; import android.content.Context; import android.content.Intent; import android.content.pm.PackageInfo; import android.content.pm.PackageManager; import android.content.pm.ProviderInfo; import android.content.pm.ResolveInfo; import android.content.res.Resources; import android.database.Cursor; import android.graphics.Bitmap; import android.graphics.Canvas; import android.graphics.Color; import android.graphics.Paint; import android.graphics.Rect; import android.graphics.RectF; import android.graphics.Typeface; import android.graphics.drawable.BitmapDrawable; import android.graphics.drawable.ShapeDrawable; import android.graphics.drawable.shapes.RoundRectShape; import android.net.Uri; import android.os.Build; import android.os.Bundle; import android.text.TextUtils; import android.util.DisplayMetrics; import android.util.Log; import android.util.TypedValue; import com.vlvxing.app.R; import com.vlvxing.app.ui.MainActivity; import java.util.Iterator; import java.util.List; /*** * 应用的快捷方式工具类 * 目前收录的有 * * * vivo vivo * 三星 samsung * 小米 Xiaomi * 中兴 ZTE * @author yang * */ public class AppShortCutUtil { private static final String TAG = "AppShortCutUtil"; //默认圆角半径 private static final int DEFAULT_CORNER_RADIUS_DIP = 8; //默认边框宽度 private static final int DEFAULT_STROKE_WIDTH_DIP = 2; //边框的颜色 private static final int DEFAULT_STROKE_COLOR = Color.WHITE; //中间数字的颜色 private static final int DEFAULT_NUM_COLOR = Color.parseColor("#CCFF0000"); /*** * 在应用图标的快捷方式上加数字 * @param clazz 启动的activity * @param isShowNum 是否显示数字 * @param num 显示的数字：整型 * @param isStroke 是否加上边框 * */ public static void addNumShortCut(Context context, Class<?> clazz, boolean isShowNum, String num, boolean isStroke) { Log.e(TAG, "manufacturer=" + Build.MANUFACTURER); if (Build.MANUFACTURER.equalsIgnoreCase("Xiaomi")) { //小米 xiaoMiShortCut(context, clazz, num); } else if (Build.MANUFACTURER.equalsIgnoreCase("samsung")) { //三星 samsungShortCut(context, num); } else if (Build.MANUFACTURER.equalsIgnoreCase("vivo")) { //vivo vivoShortCut(context, num); } else {//其他原生系统手机 installRawShortCut(context, MainActivity.class, isShowNum, num, isStroke); } } /*** * 在vivo应用图标的快捷方式上加数字<br> * @param context * @param num 显示的数字：大于99，为"99"，当为""时，不显示数字，相当于隐藏了)<br><br> * 注意点： * */ public static void vivoShortCut(Context context, String num) { Log.e(TAG, "vivoShortCut...."); Intent localIntent = new Intent("launcher.action.CHANGE_APPLICATION_NOTIFICATION_NUM"); localIntent.putExtra("packageName", context.getPackageName()); String launchClassName = context.getPackageManager().getLaunchIntentForPackage(context.getPackageName()).getComponent().getClassName(); localIntent.putExtra("className", launchClassName); if (TextUtils.isEmpty(num)) { num = ""; } else { int numInt = Integer.valueOf(num); if (numInt > 0) { if (numInt > 99) { num = "99"; } } else { num = "0"; } } localIntent.putExtra("notificationNum", Integer.parseInt(num)); context.sendBroadcast(localIntent); } /*** * 在小米应用图标的快捷方式上加数字<br> * * * @param context * @param num 显示的数字：大于99，为"99"，当为""时，不显示数字，相当于隐藏了)<br><br> * * 注意点： * context.getPackageName()+"/."+clazz.getSimpleName() （这个是启动activity的路径）中的"/."不能缺少 * */ public static void huaWeiShortCut(Context context, Class<?> clazz, String num) { Log.e(TAG, "xiaoMiShortCut...."); String launcherClassName = "com.redfinger.huaweichangebadge.MainActivity";//启动的Activity完整名称 Bundle localBundle = new Bundle();//需要存储的数据 localBundle.putString("package", context.getPackageName());//包名 localBundle.putString("class", launcherClassName); if (TextUtils.isEmpty(num)) { num = ""; } else { int numInt = Integer.valueOf(num); if (numInt > 0) { if (numInt > 99) { num = "99"; } } else { num = "0"; } } localBundle.putInt("badgenumber", Integer.parseInt(num));//未读信息条数 context.getContentResolver().call(Uri.parse("content://com.huawei.android.launcher.settings/badge/"), "change badge", null, localBundle); } /*** * 在小米应用图标的快捷方式上加数字<br> * * * @param context * @param num 显示的数字：大于99，为"99"，当为""时，不显示数字，相当于隐藏了)<br><br> * * 注意点： * context.getPackageName()+"/."+clazz.getSimpleName() （这个是启动activity的路径）中的"/."不能缺少 * */ public static void xiaoMiShortCut(Context context, Class<?> clazz, String num) { Log.e(TAG, "xiaoMiShortCut...."); Intent localIntent = new Intent("android.intent.action.APPLICATION_MESSAGE_UPDATE"); localIntent.putExtra("android.intent.extra.update_application_component_name", context.getPackageName() + "/." + clazz.getSimpleName()); if (TextUtils.isEmpty(num)) { num = ""; } else { int numInt = Integer.valueOf(num); if (numInt > 0) { if (numInt > 99) { num = "99"; } } else { num = "0"; } } localIntent.putExtra("android.intent.extra.update_application_message_text", num); context.sendBroadcast(localIntent); } /*** * 索尼手机：应用图标的快捷方式上加数字 * @param context * @param num */ public static void sonyShortCut(Context context, String num) { String activityName = getLaunchActivityName(context); if (activityName == null) { return; } Intent localIntent = new Intent(); int numInt = Integer.valueOf(num); boolean isShow = true; if (numInt < 1) { num = ""; isShow = false; } else if (numInt > 99) { num = "99"; } localIntent.putExtra("com.sonyericsson.home.intent.extra.badge.SHOW_MESSAGE", isShow); localIntent.setAction("com.sonyericsson.home.action.UPDATE_BADGE"); localIntent.putExtra("com.sonyericsson.home.intent.extra.badge.ACTIVITY_NAME", activityName); localIntent.putExtra("com.sonyericsson.home.intent.extra.badge.MESSAGE", num); localIntent.putExtra("com.sonyericsson.home.intent.extra.badge.PACKAGE_NAME", context.getPackageName()); context.sendBroadcast(localIntent); } /*** * 三星手机：应用图标的快捷方式上加数字 * @param context * @param num */ public static void samsungShortCut(Context context, String num) { int numInt = Integer.valueOf(num); if (numInt < 1) { num = "0"; } else if (numInt > 99) { num = "99"; } String activityName = getLaunchActivityName(context); Intent localIntent = new Intent("android.intent.action.BADGE_COUNT_UPDATE"); localIntent.putExtra("badge_count", num); localIntent.putExtra("badge_count_package_name", context.getPackageName()); localIntent.putExtra("badge_count_class_name", activityName); context.sendBroadcast(localIntent); } /*** * * 生成有数字的图片(没有边框) * @param context * @param icon 图片 * @param isShowNum 是否要绘制数字 * @param num 数字字符串：整型数字 超过99，显示为"99+" * @return */ public static Bitmap generatorNumIcon(Context context, Bitmap icon, boolean isShowNum, String num) { DisplayMetrics dm = context.getResources().getDisplayMetrics(); //基准屏幕密度 float baseDensity = 1.5f;//240dpi float factor = dm.density / baseDensity; Log.e(TAG, "density:" + dm.density); Log.e(TAG, "dpi:" + dm.densityDpi); Log.e(TAG, "factor:" + factor); // 初始化画布 int iconSize = (int) context.getResources().getDimension(android.R.dimen.app_icon_size); Bitmap numIcon = Bitmap.createBitmap(iconSize, iconSize, Bitmap.Config.ARGB_8888); Canvas canvas = new Canvas(numIcon); // 拷贝图片 Paint iconPaint = new Paint(); iconPaint.setDither(true);// 防抖动 iconPaint.setFilterBitmap(true);// 用来对Bitmap进行滤波处理，这样，当你选择Drawable时，会有抗锯齿的效果 Rect src = new Rect(0, 0, icon.getWidth(), icon.getHeight()); Rect dst = new Rect(0, 0, iconSize, iconSize); canvas.drawBitmap(icon, src, dst, iconPaint); if (isShowNum) { if (TextUtils.isEmpty(num)) { num = "0"; } if (!TextUtils.isDigitsOnly(num)) { //非数字 Log.e(TAG, "the num is not digit :" + num); num = "0"; } int numInt = Integer.valueOf(num); if (numInt > 99) {//超过99 num = "99+"; // 启用抗锯齿和使用设备的文本字体大小 Paint numPaint = new Paint(Paint.ANTI_ALIAS_FLAG | Paint.DEV_KERN_TEXT_FLAG); numPaint.setColor(Color.WHITE); numPaint.setTextSize(20f * factor); numPaint.setTypeface(Typeface.DEFAULT_BOLD); int textWidth = (int) numPaint.measureText(num, 0, num.length()); Log.e(TAG, "text width:" + textWidth); int circleCenter = (int) (15 * factor);//中心坐标 int circleRadius = (int) (13 * factor);//圆的半径 //绘制左边的圆形 Paint leftCirPaint = new Paint(Paint.ANTI_ALIAS_FLAG); leftCirPaint.setColor(Color.RED); canvas.drawCircle(iconSize - circleRadius - textWidth + (10 * factor), circleCenter, circleRadius, leftCirPaint); //绘制右边的圆形 Paint rightCirPaint = new Paint(Paint.ANTI_ALIAS_FLAG); rightCirPaint.setColor(Color.RED); canvas.drawCircle(iconSize - circleRadius, circleCenter, circleRadius, rightCirPaint); //绘制中间的距形 Paint rectPaint = new Paint(Paint.ANTI_ALIAS_FLAG); rectPaint.setColor(Color.RED); RectF oval = new RectF(iconSize - circleRadius - textWidth + (10 * factor), 2 * factor, iconSize - circleRadius, circleRadius * 2 + 2 * factor); canvas.drawRect(oval, rectPaint); //绘制数字 canvas.drawText(num, (float) (iconSize - textWidth / 2 - (24 * factor)), 23 * factor, numPaint); } else {//<=99 // 启用抗锯齿和使用设备的文本字体大小 Paint numPaint = new Paint(Paint.ANTI_ALIAS_FLAG | Paint.DEV_KERN_TEXT_FLAG); numPaint.setColor(Color.WHITE); numPaint.setTextSize(20f * factor); numPaint.setTypeface(Typeface.DEFAULT_BOLD); int textWidth = (int) numPaint.measureText(num, 0, num.length()); Log.e(TAG, "text width:" + textWidth); //绘制外面的圆形 //Paint outCirPaint = new Paint(Paint.ANTI_ALIAS_FLAG); //outCirPaint.setColor(Color.WHITE); //canvas.drawCircle(iconSize - 15, 15, 15, outCirPaint); //绘制内部的圆形 Paint inCirPaint = new Paint(Paint.ANTI_ALIAS_FLAG); inCirPaint.setColor(Color.RED); canvas.drawCircle(iconSize - 15 * factor, 15 * factor, 15 * factor, inCirPaint); //绘制数字 canvas.drawText(num, (float) (iconSize - textWidth / 2 - 15 * factor), 22 * factor, numPaint); } } return numIcon; } /*** * * 生成有数字的图片(没有边框) * @param context * @param icon 图片 * @param isShowNum 是否要绘制数字 * @param num 数字字符串：整型数字 超过99，显示为"99+" * @return */ public static Bitmap generatorNumIcon2(Context context, Bitmap icon, boolean isShowNum, String num) { DisplayMetrics dm = context.getResources().getDisplayMetrics(); //基准屏幕密度 float baseDensity = 1.5f;//240dpi float factor = dm.density / baseDensity; Log.e(TAG, "density:" + dm.density); Log.e(TAG, "dpi:" + dm.densityDpi); Log.e(TAG, "factor:" + factor); // 初始化画布 int iconSize = (int) context.getResources().getDimension(android.R.dimen.app_icon_size); Bitmap numIcon = Bitmap.createBitmap(iconSize, iconSize, Bitmap.Config.ARGB_8888); Canvas canvas = new Canvas(numIcon); // 拷贝图片 Paint iconPaint = new Paint(); iconPaint.setDither(true);// 防抖动 iconPaint.setFilterBitmap(true);// 用来对Bitmap进行滤波处理，这样，当你选择Drawable时，会有抗锯齿的效果 Rect src = new Rect(0, 0, icon.getWidth(), icon.getHeight()); Rect dst = new Rect(0, 0, iconSize, iconSize); canvas.drawBitmap(icon, src, dst, iconPaint); if (isShowNum) { if (TextUtils.isEmpty(num)) { num = "0"; } if (!TextUtils.isDigitsOnly(num)) { //非数字 Log.e(TAG, "the num is not digit :" + num); num = "0"; } int numInt = Integer.valueOf(num); if (numInt > 99) {//超过99 num = "99+"; } //启用抗锯齿和使用设备的文本字体大小 //测量文本占用的宽度 Paint numPaint = new Paint(Paint.ANTI_ALIAS_FLAG | Paint.DEV_KERN_TEXT_FLAG); numPaint.setColor(Color.WHITE); numPaint.setTextSize(20f * factor); numPaint.setTypeface(Typeface.DEFAULT_BOLD); int textWidth = (int) numPaint.measureText(num, 0, num.length()); Log.e(TAG, "text width:" + textWidth); /**----------------------------------* * TODO 绘制圆角矩形背景 start *------------------------------------*/ //圆角矩形背景的宽度 int backgroundHeight = (int) (2 * 15 * factor); int backgroundWidth = textWidth > backgroundHeight ? (int) (textWidth + 10 * factor) : backgroundHeight; canvas.save();//保存状态 ShapeDrawable drawable = getDefaultBackground(context); drawable.setIntrinsicHeight(backgroundHeight); drawable.setIntrinsicWidth(backgroundWidth); drawable.setBounds(0, 0, backgroundWidth, backgroundHeight); canvas.translate(iconSize - backgroundWidth, 0); drawable.draw(canvas); canvas.restore();//重置为之前保存的状态 /**----------------------------------* * TODO 绘制圆角矩形背景 end *------------------------------------*/ //绘制数字 canvas.drawText(num, (float) (iconSize - (backgroundWidth + textWidth) / 2), 22 * factor, numPaint); } return numIcon; } /*** * * 生成有数字的图片(有边框) * @param context * @param icon 图片 * @param isShowNum 是否要绘制数字 * @param num 数字字符串：整型数字 超过99，显示为"99+" * @return */ public static Bitmap generatorNumIcon3(Context context, Bitmap icon, boolean isShowNum, String num) { DisplayMetrics dm = context.getResources().getDisplayMetrics(); //基准屏幕密度 float baseDensity = 1.5f;//240dpi float factor = dm.density / baseDensity; Log.e(TAG, "density:" + dm.density); Log.e(TAG, "dpi:" + dm.densityDpi); Log.e(TAG, "factor:" + factor); // 初始化画布 int iconSize = (int) context.getResources().getDimension(android.R.dimen.app_icon_size); Bitmap numIcon = Bitmap.createBitmap(iconSize, iconSize, Bitmap.Config.ARGB_8888); Canvas canvas = new Canvas(numIcon); // 拷贝图片 Paint iconPaint = new Paint(); iconPaint.setDither(true);// 防抖动 iconPaint.setFilterBitmap(true);// 用来对Bitmap进行滤波处理，这样，当你选择Drawable时，会有抗锯齿的效果 Rect src = new Rect(0, 0, icon.getWidth(), icon.getHeight()); Rect dst = new Rect(0, 0, iconSize, iconSize); canvas.drawBitmap(icon, src, dst, iconPaint); if (isShowNum) { if (TextUtils.isEmpty(num)) { num = "0"; } if (!TextUtils.isDigitsOnly(num)) { //非数字 Log.e(TAG, "the num is not digit :" + num); num = "0"; } int numInt = Integer.valueOf(num); if (numInt > 99) {//超过99 num = "99+"; } //启用抗锯齿和使用设备的文本字体大小 //测量文本占用的宽度 Paint numPaint = new Paint(Paint.ANTI_ALIAS_FLAG | Paint.DEV_KERN_TEXT_FLAG); numPaint.setColor(Color.WHITE); numPaint.setTextSize(20f * factor); numPaint.setTypeface(Typeface.DEFAULT_BOLD); int textWidth = (int) numPaint.measureText(num, 0, num.length()); Log.e(TAG, "text width:" + textWidth); /**----------------------------------* * TODO 绘制圆角矩形背景：先画边框，再画内部的圆角矩形 start *------------------------------------*/ //圆角矩形背景的宽度 int backgroundHeight = (int) (2 * 15 * factor); int backgroundWidth = textWidth > backgroundHeight ? (int) (textWidth + 10 * factor) : backgroundHeight; //边框的宽度 int strokeThickness = (int) (2 * factor); canvas.save();//保存状态 int strokeHeight = backgroundHeight + strokeThickness * 2; int strokeWidth = textWidth > strokeHeight ? (int) (textWidth + 10 * factor + 2 * strokeThickness) : strokeHeight; ShapeDrawable outStroke = getDefaultStrokeDrawable(context); outStroke.setIntrinsicHeight(strokeHeight); outStroke.setIntrinsicWidth(strokeWidth); outStroke.setBounds(0, 0, strokeWidth, strokeHeight); canvas.translate(iconSize - strokeWidth - strokeThickness, strokeThickness); outStroke.draw(canvas); canvas.restore();//重置为之前保存的状态 canvas.save();//保存状态 ShapeDrawable drawable = getDefaultBackground(context); drawable.setIntrinsicHeight((int) (backgroundHeight + 2 * factor)); drawable.setIntrinsicWidth((int) (backgroundWidth + 2 * factor)); drawable.setBounds(0, 0, backgroundWidth, backgroundHeight); canvas.translate(iconSize - backgroundWidth - 2 * strokeThickness, 2 * strokeThickness); drawable.draw(canvas); canvas.restore();//重置为之前保存的状态 /**----------------------------------* * TODO 绘制圆角矩形背景 end *------------------------------------*/ //绘制数字 canvas.drawText(num, (float) (iconSize - (backgroundWidth + textWidth + 4 * strokeThickness) / 2), (22) * factor + 2 * strokeThickness, numPaint); } return numIcon; } /*** * * 生成有数字的图片(有边框的) * @param context * @param icon 图片 * @param isShowNum 是否要绘制数字 * @param num 数字字符串：整型数字 超过99，显示为"99+" * @return */ public static Bitmap generatorNumIcon4(Context context, Bitmap icon, boolean isShowNum, String num) { DisplayMetrics dm = context.getResources().getDisplayMetrics(); //基准屏幕密度 float baseDensity = 1.5f;//240dpi float factor = dm.density / baseDensity; Log.e(TAG, "density:" + dm.density); Log.e(TAG, "dpi:" + dm.densityDpi); Log.e(TAG, "factor:" + factor); // 初始化画布 int iconSize = (int) context.getResources().getDimension(android.R.dimen.app_icon_size); Bitmap numIcon = Bitmap.createBitmap(iconSize, iconSize, Bitmap.Config.ARGB_8888); Canvas canvas = new Canvas(numIcon); // 拷贝图片 Paint iconPaint = new Paint(); iconPaint.setDither(true);// 防抖处理 iconPaint.setFilterBitmap(true);// 用来对Bitmap进行滤波处理，这样，当你选择Drawable时，会有抗锯齿的效果 Rect src = new Rect(0, 0, icon.getWidth(), icon.getHeight()); Rect dst = new Rect(0, 0, iconSize, iconSize); canvas.drawBitmap(icon, src, dst, iconPaint); if (isShowNum) { if (TextUtils.isEmpty(num)) { num = "0"; } if (!TextUtils.isDigitsOnly(num)) { //非数字 Log.e(TAG, "the num is not digit :" + num); num = "0"; } int numInt = Integer.valueOf(num); if (numInt > 99) {//超过99 num = "99+"; } //启用抗锯齿和使用设备的文本字体 //测量文本占用的宽度 Paint numPaint = new Paint(Paint.ANTI_ALIAS_FLAG | Paint.DEV_KERN_TEXT_FLAG); numPaint.setColor(Color.WHITE); numPaint.setTextSize(25f * factor); numPaint.setTypeface(Typeface.DEFAULT_BOLD); int textWidth = (int) numPaint.measureText(num, 0, num.length()); Log.e(TAG, "text width:" + textWidth); /**----------------------------------* * TODO 绘制圆角矩形背景 start *------------------------------------*/ //边框的宽度 int strokeThickness = (int) (DEFAULT_STROKE_WIDTH_DIP * factor); //圆角矩形背景的宽度 float radiusPx = 15 * factor; int backgroundHeight = (int) (2 * (radiusPx + strokeThickness));//2*(半径+边框宽度) int backgroundWidth = textWidth > backgroundHeight ? (int) (textWidth + 10 * factor + 2 * strokeThickness) : backgroundHeight; canvas.save();//保存状态 ShapeDrawable drawable = getDefaultBackground2(context); drawable.setIntrinsicHeight(backgroundHeight); drawable.setIntrinsicWidth(backgroundWidth); drawable.setBounds(0, 0, backgroundWidth, backgroundHeight); canvas.translate(iconSize - backgroundWidth - strokeThickness, 2 * strokeThickness); drawable.draw(canvas); canvas.restore();//重置为之前保存的状态 /**----------------------------------* * TODO 绘制圆角矩形背景 end *------------------------------------*/ //绘制数字 canvas.drawText(num, (float) (iconSize - (backgroundWidth + textWidth + 2 * strokeThickness) / 2), (float) (25 * factor + 2.5 * strokeThickness), numPaint); } return numIcon; } /*** * 创建原生系统的快捷方式 * @param context * @param clazz 启动的activity * @param isShowNum 是否显示数字 * @param num 显示的数字：整型 * @param isStroke 是否加上边框 */ public static void installRawShortCut(Context context, Class<?> clazz, boolean isShowNum, String num, boolean isStroke) { Log.e(TAG, "installShortCut...."); Intent shortcutIntent = new Intent("com.android.launcher.action.INSTALL_SHORTCUT"); //名称 shortcutIntent.putExtra(Intent.EXTRA_SHORTCUT_NAME, context.getString(R.string.app_name)); // 是否可以有多个快捷方式的副本，参数如果是true就可以生成多个快捷方式，如果是false就不会重复添加 shortcutIntent.putExtra("duplicate", false); //点击快捷方式：打开activity Intent mainIntent = new Intent(Intent.ACTION_MAIN); mainIntent.addCategory(Intent.CATEGORY_LAUNCHER); mainIntent.setClass(context, clazz); shortcutIntent.putExtra(Intent.EXTRA_SHORTCUT_INTENT, mainIntent); //快捷方式的图标 if (isStroke) { shortcutIntent.putExtra(Intent.EXTRA_SHORTCUT_ICON, generatorNumIcon4( context, ((BitmapDrawable) context.getResources().getDrawable(R.drawable.ic_loading_rotate)).getBitmap(), isShowNum, num)); } else { shortcutIntent.putExtra(Intent.EXTRA_SHORTCUT_ICON, generatorNumIcon2( context, ((BitmapDrawable) context.getResources().getDrawable(R.drawable.ic_loading_rotate)).getBitmap(), isShowNum, num)); } context.sendBroadcast(shortcutIntent); } /*** * 是否已经创建了快捷方式 * @param context * @return */ public static boolean isAddShortCut(Context context) { Log.e(TAG, "isAddShortCut...."); boolean isInstallShortcut = false; final ContentResolver cr = context.getContentResolver(); //TODO 注释的代码，在有的手机：修改了ROM的系统，不能支持 /*int versionLevel = android.os.Build.VERSION.SDK_INT; String AUTHORITY = "com.android.launcher2.settings"; //2.2以上的系统的文件文件名字是不一样的 if (versionLevel >= 8) { AUTHORITY = "com.android.launcher2.settings"; } else { AUTHORITY = "com.android.launcher.settings"; }*/ String AUTHORITY = getAuthorityFromPermission(context, "com.android.launcher.permission.READ_SETTINGS"); Log.e(TAG, "AUTHORITY : " + AUTHORITY); final Uri CONTENT_URI = Uri.parse("content://" + AUTHORITY + "/favorites?notify=true"); Cursor c = cr.query(CONTENT_URI, new String[]{"title"}, "title=?", new String[]{context.getString(R.string.app_name)}, null); if (c != null && c.getCount() > 0) { isInstallShortcut = true; } if (c != null) { c.close(); } Log.e(TAG, "isAddShortCut....isInstallShortcut=" + isInstallShortcut); return isInstallShortcut; } /** * 删除快捷方式 * * @param context * @param clazz */ public static void deleteShortCut(Context context, Class<?> clazz) { Log.e(TAG, "delShortcut...."); if (Build.MANUFACTURER.equalsIgnoreCase("Xiaomi")) { //小米 //当为""时，不显示数字，相当于隐藏了) xiaoMiShortCut(context, clazz, ""); } else if (Build.MANUFACTURER.equalsIgnoreCase("samsung")) { //三星 samsungShortCut(context, "0"); } else {//其他原生系统手机 //删除显示数字的快捷方式 deleteRawShortCut(context, clazz); //安装不显示数字的快捷方式 //installRawShortCut(context, clazz, false, "0"); } } /*** * 删除原生系统的快捷方式 * @param context * @param clazz 启动的activity */ public static void deleteRawShortCut(Context context, Class<?> clazz) { Intent intent = new Intent("com.android.launcher.action.UNINSTALL_SHORTCUT"); //快捷方式的名称 intent.putExtra(Intent.EXTRA_SHORTCUT_NAME, context.getString(R.string.app_name)); Intent intent2 = new Intent(); intent2.setClass(context, clazz); intent2.setAction(Intent.ACTION_MAIN); intent2.addCategory(Intent.CATEGORY_LAUNCHER); intent.putExtra(Intent.EXTRA_SHORTCUT_INTENT, intent2); context.sendBroadcast(intent); } /*** * 取得权限相应的认证URI * @param context * @param permission * @return */ public static String getAuthorityFromPermission(Context context, String permission) { if (TextUtils.isEmpty(permission)) { return null; } List<PackageInfo> packInfos = context.getPackageManager().getInstalledPackages(PackageManager.GET_PROVIDERS); if (packInfos == null) { return null; } for (PackageInfo info : packInfos) { ProviderInfo[] providers = info.providers; if (providers != null) { for (ProviderInfo provider : providers) { if (permission.equals(provider.readPermission) || permission.equals(provider.writePermission)) { return provider.authority; } } } } return null; } /*** * 取得当前应用的启动activity的名称： * mainfest.xml中配置的 android:name:" * @param context * @return */ public static String getLaunchActivityName(Context context) { PackageManager localPackageManager = context.getPackageManager(); Intent localIntent = new Intent("android.intent.action.MAIN"); localIntent.addCategory("android.intent.category.LAUNCHER"); try { Iterator<ResolveInfo> localIterator = localPackageManager.queryIntentActivities(localIntent, 0).iterator(); while (localIterator.hasNext()) { ResolveInfo localResolveInfo = localIterator.next(); if (!localResolveInfo.activityInfo.applicationInfo.packageName.equalsIgnoreCase(context.getPackageName())) continue; String str = localResolveInfo.activityInfo.name; return str; } } catch (Exception localException) { return null; } return null; } /*** * 得到一个默认的背景：圆角矩形<br><br> * 使用代码来生成一个背景：相当于用<shape>的xml的背景 * * @return */ private static ShapeDrawable getDefaultBackground(Context context) { //这个是为了应对不同分辨率的手机，屏幕兼容性 int r = dipToPixels(context, DEFAULT_CORNER_RADIUS_DIP); float[] outerR = new float[]{r, r, r, r, r, r, r, r}; //圆角矩形 RoundRectShape rr = new RoundRectShape(outerR, null, null); ShapeDrawable drawable = new ShapeDrawable(rr); drawable.getPaint().setColor(DEFAULT_NUM_COLOR);//设置颜色 return drawable; } /*** * 得到一个默认的背景：圆角矩形<br><br> * 使用代码来生成一个背景：相当于用<shape>的xml的背景 * * @return */ private static ShapeDrawable getDefaultBackground2(Context context) { //这个是为了应对不同分辨率的手机，屏幕兼容性 int r = dipToPixels(context, DEFAULT_CORNER_RADIUS_DIP); float[] outerR = new float[]{r, r, r, r, r, r, r, r}; int distance = dipToPixels(context, DEFAULT_STROKE_WIDTH_DIP); //圆角矩形 RoundRectShape rr = new RoundRectShape(outerR, null, null); ShapeDrawable drawable = new ShapeDrawable(); // drawable.getFillpaint().setColor(DEFAULT_NUM_COLOR);//设置填充颜色 // drawable.getStrokepaint().setColor(DEFAULT_STROKE_COLOR);//设置边框颜色 // drawable.getStrokepaint().setStrokeWidth(distance);//设置边框宽度 return drawable; } /*** * 得到一个默认的背景：圆角矩形<br><br> * 使用代码来生成一个背景：相当于用<shape>的xml的背景 * * @return */ private static ShapeDrawable getDefaultStrokeDrawable(Context context) { //这个是为了应对不同分辨率的手机，屏幕兼容性 int r = dipToPixels(context, DEFAULT_CORNER_RADIUS_DIP); int distance = dipToPixels(context, DEFAULT_STROKE_WIDTH_DIP); float[] outerR = new float[]{r, r, r, r, r, r, r, r}; //圆角矩形 RoundRectShape rr = new RoundRectShape(outerR, null, null); ShapeDrawable drawable = new ShapeDrawable(rr); drawable.getPaint().setStrokeWidth(distance); drawable.getPaint().setStyle(Paint.Style.FILL); drawable.getPaint().setColor(DEFAULT_STROKE_COLOR);//设置颜色 return drawable; } /*** * dp to px * @param dip * @return */ public static int dipToPixels(Context context, int dip) { Resources r = context.getResources(); float px = TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, dip, r.getDisplayMetrics()); return (int) px; } }这里在应用图标上添加了角标来展示未读消息条目,隐藏可以复用这些方法未读消息的条目更改为0,就可以去掉角标.
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