自定义设置圆角大小的圆角按钮

【由于本人是第一次写博客，所以就直接上代码，不罗嗦！！！】

1.效果图（单机时可设置动画）

2.属性

lq:roundSize="30"                      //设置圆角大小，默认是16lq:backgroud="@color/colorPrimary"    //设置背景lq:text="圆角按钮2"                    //设置文本lq:textSize="18sp"//设置文本大小

lq:textColor="@color/colorPrimaryDark" //设置文本颜色

3.布局中的使用

<com.beacon.constomdemo.view.RoundButton    android:id="@+id/roundBtn"    android:layout_gravity="center_horizontal"    android:layout_width="wrap_content"    android:layout_height="wrap_content"    lq:backgroud="@color/colorAccent"    lq:text="圆角按钮1"    lq:textSize="18sp"/><com.beacon.constomdemo.view.RoundButton    android:id="@+id/roundBtn2"    android:layout_gravity="center_horizontal"    android:layout_marginTop="30dp"    android:layout_width="wrap_content"    android:layout_height="wrap_content"    lq:roundSize="30"    lq:backgroud="@color/colorPrimary"    lq:text="圆角按钮2"    lq:textSize="18sp"/>

4.Activity中的使用

//圆角按钮1 默认单机效果透明动画RoundButton roundButton = (RoundButton) findViewById(R.id.roundBtn);roundButton.setOnRoundBtnClickListener(new RoundButton.OnRoundBtnClickListener() {    @Override    public void onClick(String content) {        Toast.makeText(MainActivity.this,content,Toast.LENGTH_SHORT).show();    }});//圆角按钮2 单机效果摇头动画RoundButton roundButton2 = (RoundButton) findViewById(R.id.roundBtn2);roundButton2.setOnRoundBtnClickListener(new RoundButton.OnRoundBtnClickListener() {    @Override    public void onClick(String content) {        Toast.makeText(MainActivity.this,content,Toast.LENGTH_SHORT).show();    }},RoundButton.SWING_ANIMATION);

5.源码分享

1)java代码

/** * Created by 刘强lq * <p> * 圆角按钮 */public class RoundButton extends View {    //设置摇头动画    public static final int SWING_ANIMATION = 1;    //设置透明动画    public static final int ALPHA_ANIMATION = 2;    //画笔    private Paint mPaint;    //文本    private String mText;    //文本颜色    private int mTextColor = Color.WHITE;    //文本大小    private int mTextSize;    //控件的宽度    private int mWidth;    //控件的高度    private int mHeight;    //背景    private int mBackgroud = Color.BLACK;    //圆角的角度    private float mRoundSize = 16;    //矩形    private Rect mTextbounds;    private int mAnomationMode = ALPHA_ANIMATION;    //监听事件的接口    private OnRoundBtnClickListener mOnRoundBtnClickListener;    public void setOnRoundBtnClickListener(OnRoundBtnClickListener onRoundBtnClickListener) {        mOnRoundBtnClickListener = onRoundBtnClickListener;    }    public void setOnRoundBtnClickListener(OnRoundBtnClickListener onRoundBtnClickListener, int anomationMode) {        mOnRoundBtnClickListener = onRoundBtnClickListener;        this.mAnomationMode = anomationMode;    }    public RoundButton(Context context) {        this(context, null);    }    public RoundButton(Context context, @Nullable AttributeSet attrs) {        this(context, attrs, 0);    }    public RoundButton(Context context, @Nullable AttributeSet attrs, int defStyleAttr) {        super(context, attrs, defStyleAttr);        TypedArray typedArray = context.obtainStyledAttributes(attrs, R.styleable.RoundButton, defStyleAttr, 0);        int indexCount = typedArray.getIndexCount();        for (int i = 0; i < indexCount; i++) {            int index = typedArray.getIndex(i);            switch (index) {                case R.styleable.RoundButton_text:                    mText = typedArray.getString(index);                    break;                case R.styleable.RoundButton_textSize:                    mTextSize = typedArray.getDimensionPixelSize(index, (int) TypedValue.applyDimension(                            TypedValue.COMPLEX_UNIT_SP, 16, getResources().getDisplayMetrics()));                    break;                case R.styleable.RoundButton_textColor:                    mTextColor = typedArray.getColor(index, Color.WHITE);                    break;                case R.styleable.RoundButton_backgroud:                    mBackgroud = typedArray.getColor(index, Color.BLACK);                    break;                case R.styleable.RoundButton_roundSize:                    mRoundSize = typedArray.getFloat(index, 16);                    break;                default:                    break;            }        }        typedArray.recycle();        init();        this.setOnClickListener(new OnClickListener() {            @Override            public void onClick(View v) {                if (mOnRoundBtnClickListener != null) {                    mOnRoundBtnClickListener.onClick(mText);                    if (mAnomationMode == ALPHA_ANIMATION) {                        onClickAnimation();                    } else {                        onClickAnimation2();                    }                }            }        });    }    /**     * 初始化     */    private void init() {        mPaint = new Paint();        mPaint.setAntiAlias(true);        mPaint.setTextSize(mTextSize);        mPaint.setStyle(Paint.Style.FILL);        //定义Rect做文本的宽高的测量        mTextbounds = new Rect();        mPaint.getTextBounds(mText, 0, mText.length(), mTextbounds);    }    /**     * 测量     *     * @param widthMeasureSpec     * @param heightMeasureSpec     */    @Override    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {        int widthMode = MeasureSpec.getMode(widthMeasureSpec);        int widthSize = MeasureSpec.getSize(widthMeasureSpec);        if (widthMode == MeasureSpec.EXACTLY) { //（精确值）控件为匹配父亲            mWidth = widthSize;        } else { //包裹内容或无限大的时候            mWidth = mTextbounds.width() + getPaddingRight() + getPaddingLeft() + mTextbounds.width() / mText.length();            if (widthMode == MeasureSpec.AT_MOST) { //无限大的时候                mWidth = Math.min(mWidth, widthSize);            }        }        int heightMode = MeasureSpec.getMode(heightMeasureSpec);        int heightSize = MeasureSpec.getSize(heightMeasureSpec);        if (heightMode == MeasureSpec.EXACTLY) {            mHeight = heightSize;        } else {            mHeight = mTextbounds.height() * 2 + getPaddingBottom() + getPaddingTop();            if (heightMode == MeasureSpec.AT_MOST) {                mHeight = Math.min(mHeight, heightSize);            }        }        setMeasuredDimension(mWidth, mHeight);    }    /**     * 绘制     *     * @param canvas     */    @Override    protected void onDraw(Canvas canvas) {        super.onDraw(canvas);        //绘制边框        mPaint.setColor(mBackgroud);        RectF ractF = new RectF(0, 0, getMeasuredWidth(), getMeasuredHeight());        canvas.drawRoundRect(ractF, mRoundSize, mRoundSize, mPaint);        //绘制文本        mPaint.setColor(mTextColor);        //计算绘制文本的位置        int startX = getMeasuredWidth() / 2 - mTextbounds.width() / 2;        int startY = getMeasuredHeight() / 2 + mTextbounds.height() / 2 - mTextbounds.bottom;        canvas.drawText(mText, startX, startY, mPaint);    }    /**     * 定义监听时间的接口     */    public interface OnRoundBtnClickListener {        void onClick(String content);    }    /**     * 设置默认点击的动画     */    private void onClickAnimation() {        AlphaAnimation alphaAnimation = new AlphaAnimation(0, 1);        alphaAnimation.setDuration(660);        this.startAnimation(alphaAnimation);    }    /**     * 设置点机的动画2     */    private void onClickAnimation2() {        SwingAnimation swingAnimation = new SwingAnimation();        swingAnimation.setDuration(660);        this.startAnimation(swingAnimation);    }    /**     * 摇头动画     */    class SwingAnimation extends Animation {        @Override        public void initialize(int width, int height, int parentWidth, int parentHeight) {            super.initialize(width, height, parentWidth, parentHeight);        }        @Override        protected void applyTransformation(float interpolatedTime, Transformation t) {            t.getMatrix().setTranslate((float) (Math.sin(interpolatedTime * 20) * 50), 0);            super.applyTransformation(interpolatedTime, t);        }    }    /**     * 设置点击动画     *     * @param anomationMode     */    public void setAnomationMode(int anomationMode) {        mAnomationMode = anomationMode;    }    public String getText() {        return mText;    }    public void setText(String text) {        mText = text;        postInvalidate();    }    public int getTextColor() {        return mTextColor;    }    public void setTextColor(int textColor) {        mTextColor = textColor;        postInvalidate();    }    public int getTextSize() {        return mTextSize;    }    public void setTextSize(int textSize) {        mTextSize = textSize;        postInvalidate();    }    public int getBtnWidth() {        return mWidth;    }    public void setBtnWidth(int width) {        mWidth = width;        postInvalidate();    }    public int getBtnHeight() {        return mHeight;    }    public void setBtnHeight(int height) {        mHeight = height;        postInvalidate();    }    public int getBackgroud() {        return mBackgroud;    }    public void setBackgroud(int backgroud) {        mBackgroud = backgroud;        postInvalidate();    }    public float getRoundSize() {        return mRoundSize;    }    public void setRoundSize(float roundSize) {        mRoundSize = roundSize;        postInvalidate();    }}
2)属性
<!--圆角按钮--><declare-styleable name="RoundButton">    <attr name="textSize" format="dimension"/>    <attr name="textColor" format="color"/>    <attr name="text" format="string"/>    <attr name="backgroud" format="color"/>    <attr name="roundSize" format="float"/></declare-styleable>