Android實(shí)現(xiàn)導(dǎo)航欄添加消息數(shù)目提示功能

<?xml version="1.0" encoding="utf-8"?><RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:background="@color/colorGrayBg"    tools:context="cn.ln80.happybirdcloud119.activity.MainActivity">
    <android.support.v4.view.ViewPager        android:id="@+id/vp_main_page"        android:layout_width="match_parent"        android:layout_height="match_parent"        android:layout_marginBottom="61dp" />
    <!--底欄-->    <RadioGroup        android:id="@+id/rg_main_bottom"        android:layout_width="match_parent"        android:layout_height="@dimen/iconsize_60"        android:layout_alignParentBottom="true"        android:background="@android:color/white"        android:orientation="horizontal">

        <RadioButton            android:id="@+id/rb_main_task"            style="@style/BottomRadio"            android:drawableTop="@drawable/bg_bottom_task"            android:text="可視化"            android:textColor="@drawable/txt_bottom_notify" />

        <RadioButton            android:id="@+id/rb_main_notify"            style="@style/BottomRadio"            android:layout_height="match_parent"            android:drawableTop="@drawable/bg_bottom_notify"            android:text="通知"            android:textColor="@drawable/txt_bottom_notify" />

        <RadioButton            android:id="@+id/rb_main_home"            style="@style/BottomRadio"            android:layout_marginTop="@dimen/widget_margin_5"            android:checked="true"            android:drawableTop="@drawable/bg_bottom_home"            android:text="主頁(yè)"            android:textColor="@drawable/txt_bottom_notify" />
        <RadioButton            android:id="@+id/rb_main_inspect"            style="@style/BottomRadio"            android:drawableTop="@drawable/bg_bottom_inspect"            android:text="巡檢"            android:textColor="@drawable/txt_bottom_notify" />
        <RadioButton            android:id="@+id/rb_main_mine"            style="@style/BottomRadio"            android:drawableTop="@drawable/bg_bottom_mine"            android:text="我的"            android:textColor="@drawable/txt_bottom_notify" />
    </RadioGroup>
    <LinearLayout        android:layout_width="match_parent"        android:layout_height="@dimen/iconsize_60"        android:layout_alignParentBottom="true"        android:orientation="horizontal">
        <Button            android:id="@+id/btn_main_task"            android:layout_width="0dp"            android:layout_height="match_parent"            android:layout_weight="1"            android:background="@null" />
        <Button            android:id="@+id/btn_main_notification"            android:layout_width="0dp"            android:layout_height="match_parent"            android:layout_weight="1"            android:background="@null" />
        <Button            android:id="@+id/btn_main_home"            android:layout_width="0dp"            android:layout_height="match_parent"            android:layout_weight="1"            android:background="@null" />
        <Button            android:id="@+id/btn_main_inspect"            android:layout_width="0dp"            android:layout_height="match_parent"            android:layout_weight="1"            android:background="@null" />
        <Button            android:id="@+id/btn_main_my"            android:layout_width="0dp"            android:layout_height="match_parent"            android:layout_weight="1"            android:background="@null" />    </LinearLayout></RelativeLayout>

    @OnClick({R.id.btn_main_task, R.id.btn_main_notification, R.id.btn_main_home, R.id.btn_main_inspect, R.id.btn_main_my})    public void onViewClicked(View view) {        switch (view.getId()) {            case R.id.btn_main_task:                rbTask.setChecked(true);                break;            case R.id.btn_main_notification:                rbNotify.setChecked(true);                break;            case R.id.btn_main_home:                rbHome.setChecked(true);                break;            case R.id.btn_main_inspect:                rbInspect.setChecked(true);                break;            case R.id.btn_main_my:                rbMine.setChecked(true);                break;        }    }

public class BadgeView extends android.support.v7.widget.AppCompatTextView {
    private boolean mHideOnNull = true;
    public BadgeView(Context context) {        this(context, null);    }
    public BadgeView(Context context, AttributeSet attrs) {        this(context, attrs, android.R.attr.textViewStyle);    }
    public BadgeView(Context context, AttributeSet attrs, int defStyle) {        super(context, attrs, defStyle);
        init();    }
    private void init() {        if (!(getLayoutParams() instanceof LinearLayout.LayoutParams)) {            LinearLayout.LayoutParams layoutParams =                    new LinearLayout.LayoutParams(                            android.view.ViewGroup.LayoutParams.WRAP_CONTENT,                            android.view.ViewGroup.LayoutParams.WRAP_CONTENT,                            Gravity.END | Gravity.TOP);            setLayoutParams(layoutParams);        }
        // set default font        setTextColor(Color.WHITE);        setTypeface(Typeface.DEFAULT_BOLD);        setTextSize(TypedValue.COMPLEX_UNIT_SP, 11);        setPadding(dip2Px(5), dip2Px(1), dip2Px(5), dip2Px(1));
        // set default background        setBackground(9, Color.parseColor("#d3321b"));
        setGravity(Gravity.CENTER);
        // default values        setHideOnNull(true);        setBadgeCount(0);    }
    public void setBackground(int dipRadius, int badgeColor) {        int radius = dip2Px(dipRadius);        float[] radiusArray = new float[]{radius, radius, radius, radius, radius, radius, radius, radius};
        RoundRectShape roundRect = new RoundRectShape(radiusArray, null, null);        ShapeDrawable bgDrawable = new ShapeDrawable(roundRect);        bgDrawable.getPaint().setColor(badgeColor);        setBackground(bgDrawable);    }
    /**     * @return Returns true if view is hidden on badge value 0 or null;     */    public boolean isHideOnNull() {        return mHideOnNull;    }
    /**     * @param hideOnNull the hideOnNull to set     */    public void setHideOnNull(boolean hideOnNull) {        mHideOnNull = hideOnNull;        setText(getText());    }
    /*     * (non-Javadoc)     *     * @see android.widget.TextView#setText(java.lang.CharSequence, android.widget.TextView.BufferType)     */    @Override    public void setText(CharSequence text, BufferType type) {        if (isHideOnNull() && (text == null || text.toString().equalsIgnoreCase("0"))) {            setVisibility(View.GONE);        } else {            setVisibility(View.VISIBLE);        }        super.setText(text, type);    }
    public void setBadgeCount(int count) {        setText(String.valueOf(count));    }
    public Integer getBadgeCount() {        if (getText() == null) {            return null;        }
        String text = getText().toString();        try {            return Integer.parseInt(text);        } catch (NumberFormatException e) {            return null;        }    }
    public void setBadgeGravity(int gravity) {        FrameLayout.LayoutParams params = (FrameLayout.LayoutParams) getLayoutParams();        params.gravity = gravity;        setLayoutParams(params);    }
    public int getBadgeGravity() {        FrameLayout.LayoutParams params = (FrameLayout.LayoutParams) getLayoutParams();        return params.gravity;    }
    public void setBadgeMargin(int dipMargin) {        setBadgeMargin(dipMargin, dipMargin, dipMargin, dipMargin);    }
    public void setBadgeMargin(int leftDipMargin, int topDipMargin, int rightDipMargin, int bottomDipMargin) {        FrameLayout.LayoutParams params = (FrameLayout.LayoutParams) getLayoutParams();        params.leftMargin = dip2Px(leftDipMargin);        params.topMargin = dip2Px(topDipMargin);        params.rightMargin = dip2Px(rightDipMargin);        params.bottomMargin = dip2Px(bottomDipMargin);        setLayoutParams(params);    }
    public int[] getBadgeMargin() {        FrameLayout.LayoutParams params = (FrameLayout.LayoutParams) getLayoutParams();        return new int[]{params.leftMargin, params.topMargin, params.rightMargin, params.bottomMargin};    }
    public void incrementBadgeCount(int increment) {        Integer count = getBadgeCount();        if (count == null) {            setBadgeCount(increment);        } else {            setBadgeCount(increment + count);        }    }
    public void decrementBadgeCount(int decrement) {        incrementBadgeCount(-decrement);    }
    /*     * Attach the BadgeView to the TabWidget     *     * @param target the TabWidget to attach the BadgeView     *     * @param tabIndex index of the tab     */    public void setTargetView(TabWidget target, int tabIndex) {        View tabView = target.getChildTabViewAt(tabIndex);        setTargetView(tabView);    }
    /*     * Attach the BadgeView to the target view     *     * @param target the view to attach the BadgeView     */    public void setTargetView(View target) {        if (getParent() != null) {            ((ViewGroup) getParent()).removeView(this);        }
        if (target == null) {            return;        }
        if (target.getParent() instanceof FrameLayout) {            ((FrameLayout) target.getParent()).addView(this);
        } else if (target.getParent() instanceof ViewGroup) {            ViewGroup parentContainer = (ViewGroup) target.getParent();            int groupIndex = parentContainer.indexOfChild(target);            parentContainer.removeView(target);
            FrameLayout badgeContainer = new FrameLayout(getContext());            ViewGroup.LayoutParams parentLayoutParams = target.getLayoutParams();
            badgeContainer.setLayoutParams(parentLayoutParams);            target.setLayoutParams(new ViewGroup.LayoutParams(                    ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT));
            parentContainer.addView(badgeContainer, groupIndex, parentLayoutParams);            badgeContainer.addView(target);
            badgeContainer.addView(this);        } else if (target.getParent() == null) {            Log.e(getClass().getSimpleName(), "ParentView is needed");        }
    }
    /*     * converts dip to px     */    private int dip2Px(float dip) {        return (int) (dip * getContext().getResources().getDisplayMetrics().density + 0.5f);    }}

   BadgeView badgeView = new BadgeView(this);   badgeView.setTargetView(btnMainNotification);   badgeView.setBadgeCount(12);   badgeView.setBackground(20, getResources().getColor(R.color.colorRed));

    //設(shè)置依附的控件    setTargetView(View)     //設(shè)置顯示的數(shù)字    setBadgeCount(int)     //設(shè)置顯示的位置    setBadgeGravity(Gravity)     //設(shè)置背景色    setBackgroundColor()      //設(shè)置背景圖片    setBackgroundResource()     //設(shè)置顯示字體  比如說加粗、傾斜、啥的    setTypeface()     //設(shè)置字體陰影    setShadowLayer()

new QBadgeView(this).bindTarget(btnMainNotification).setBadgeText("99+").setBadgeBackgroundColor(getResources().getColor(R.color.colorRed));

          //設(shè)置Badge數(shù)字    setBadgeNumber(int i);          //設(shè)置Badge文本    setBadgeText(String text);            //設(shè)置文本字體大小    setBadgeTextSize(int size);           // 設(shè)置文本顏色    setBadgeTextColor();          //設(shè)置是否顯示精確模式數(shù)值     setExactMode();          //設(shè)置Badge相對(duì)于TargetView的位置     setBadgeGravity();           //設(shè)置外邊距     setGravityOffset();          //設(shè)置內(nèi)邊距     setBadgePadding();          //設(shè)置背景色     setBadgeBackgroundColor();           //設(shè)置背景圖片      setBadgeBackground();          //設(shè)置是否顯示陰影      setShowShadow();          //打開拖拽消除模式并設(shè)置監(jiān)聽      setOnDragStateChangedListener();          //描邊      stroke();          //隱藏Badge      hide();