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类似咻一咻,水波纹实现

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一、效果
这里写图片描述
点击开始:
这里写图片描述
点击停止:
这里写图片描述

二、在MainActivity中

import android.graphics.Paint;
import android.os.Bundle;
import android.support.v4.view.animation.LinearOutSlowInInterpolator;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Button;

public class MainActivity extends AppCompatActivity implements View.OnClickListener {

    //    private WaveView mWaveView1;
    private WaveView mWaveView2;
    private Button mStart;
    private Button mStop;
    private CircleImageView circleImageView;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        mStart = (Button) findViewById(R.id.start);
        mStop = (Button) findViewById(R.id.stop);
        circleImageView = (CircleImageView) findViewById(R.id.civ_info);
        circleImageView.setImageResource(R.mipmap.icon_ku);


        mWaveView2 = (WaveView) findViewById(R.id.wave_view2);
        mWaveView2.setDuration(5000);
        mWaveView2.setStyle(Paint.Style.FILL_AND_STROKE);
        mWaveView2.setColor(getResources().getColor(R.color.green));
        mWaveView2.setInterpolator(new LinearOutSlowInInterpolator());

        mStart.setOnClickListener(this);
        mStop.setOnClickListener(this);
    }

    @Override
    public void onClick(View v) {
        switch (v.getId()) {
            case R.id.start:
                mWaveView2.setColor(getResources().getColor(R.color.green));
                mWaveView2.start();
                circleImageView.setImageResource(R.mipmap.icon_xiao);
                break;
            case R.id.stop:
                mWaveView2.setColor(getResources().getColor(R.color.red));
                mWaveView2.stop();
                circleImageView.setImageResource(R.mipmap.icon_ku);
                break;
        }
    }
}

三、在activity_main中

<?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:id="@+id/activity_main"
    android:layout_width="match_parent" 
       android:layout_height="match_parent"
    >

    <Button
        android:id="@+id/start"
        android:layout_marginTop="10dp"
        android:layout_marginLeft="10dp"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="开始" />

    <Button
        android:id="@+id/stop"
        android:layout_toRightOf="@id/start"
        android:layout_marginTop="10dp"
        android:layout_marginLeft="10dp"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="停止" />

    <cn.hnshangyu.xiuyixiu.WaveView
        android:id="@+id/wave_view2"
        android:layout_width="350dp"
        android:layout_height="350dp"
        android:layout_centerInParent="true"
        android:layout_marginTop="10dp"

        android:textSize="24dp" />

    <cn.hnshangyu.xiuyixiu.CircleImageView
        android:id="@+id/civ_info"
        android:layout_width="100dp"
        android:layout_height="100dp"
        android:layout_centerInParent="true"
        android:gravity="center"
        android:src="@color/green"
        android:text="@string/app_name"
        android:textColor="@color/colorPrimary" />

四、在WaveView中:

import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.util.AttributeSet;
import android.view.View;
import android.view.animation.Interpolator;
import android.view.animation.LinearInterpolator;

import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

/**
 * 水波纹特效
 */
public class WaveView extends View {
    private float mInitialRadius=100;   // 初始波纹半径
    private float mMaxRadiusRate = 0.85f;   // 如果没有设置mMaxRadius,可mMaxRadius = 最小长度 * mMaxRadiusRate;
    private float mMaxRadius;   // 最大波纹半径
    private long mDuration = 2000; // 一个波纹从创建到消失的持续时间
    private int mSpeed = 2000;   // 波纹的创建速度,每2000ms创建一个
    private Interpolator mInterpolator = new LinearInterpolator();

    private List<Circle> mCircleList = new ArrayList<Circle>();
    private boolean mIsRunning;

    private boolean mMaxRadiusSet;

    private Paint mPaint;
    private long mLastCreateTime;

    private Runnable mCreateCircle = new Runnable() {
        @Override
        public void run() {
            if (mIsRunning) {
                newCircle();
                postDelayed(mCreateCircle, mSpeed);
            }
        }
    };

    public WaveView(Context context) {
        this(context, null);
    }

    public WaveView(Context context, AttributeSet attrs) {
        super(context, attrs);
        mPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
        setStyle(Paint.Style.FILL);
    }

    public void setStyle(Paint.Style style) {
        mPaint.setStyle(style);
    }

    @Override
    protected void onSizeChanged(int w, int h, int oldw, int oldh) {
        if (!mMaxRadiusSet) {
            mMaxRadius = Math.min(w, h) * mMaxRadiusRate / 2.0f;
        }
    }

    public void setMaxRadiusRate(float maxRadiusRate) {
        this.mMaxRadiusRate = maxRadiusRate;
    }

    public void setColor(int color) {
        mPaint.setColor(color);
    }

    /**
     * 开始
     */
    public void start() {
        if (!mIsRunning) {
            mIsRunning = true;
            mCreateCircle.run();
        }
    }

    /**
     * 停止
     */
    public void stop() {
        mIsRunning = false;
    }

    protected void onDraw(Canvas canvas) {
        Iterator<Circle> iterator = mCircleList.iterator();
        while (iterator.hasNext()) {
            Circle circle = iterator.next();
            if (System.currentTimeMillis() - circle.mCreateTime < mDuration) {
                mPaint.setAlpha(circle.getAlpha());
                canvas.drawCircle(getWidth() / 2, getHeight() / 2, circle.getCurrentRadius(), mPaint);
            } else {
                iterator.remove();
            }
        }
        if (mCircleList.size() > 0) {
            postInvalidateDelayed(10);
        }
    }

    public void setInitialRadius(float radius) {
        mInitialRadius = radius;
    }

    public void setDuration(long duration) {
        this.mDuration = duration;
    }

    public void setMaxRadius(float maxRadius) {
        this.mMaxRadius = maxRadius;
        mMaxRadiusSet = true;
    }

    public void setSpeed(int speed) {
        mSpeed = speed;
    }

    private void newCircle() {
        long currentTime = System.currentTimeMillis();
        if (currentTime - mLastCreateTime < mSpeed) {
            return;
        }
        Circle circle = new Circle();
        mCircleList.add(circle);
        invalidate();
        mLastCreateTime = currentTime;
    }

    private class Circle {
        private long mCreateTime;

        public Circle() {
            this.mCreateTime = System.currentTimeMillis();
        }

        public int getAlpha() {
            float percent = (System.currentTimeMillis() - mCreateTime) * 1.0f / mDuration;
            return (int) ((1.0f - mInterpolator.getInterpolation(percent)) * 255);
        }

        public float getCurrentRadius() {
            float percent = (System.currentTimeMillis() - mCreateTime) * 1.0f / mDuration;
            return mInitialRadius + mInterpolator.getInterpolation(percent) * (mMaxRadius - mInitialRadius);
        }
    }

    public void setInterpolator(Interpolator interpolator) {
        mInterpolator = interpolator;
        if (mInterpolator == null) {
            mInterpolator = new LinearInterpolator();
        }
    }
}

五、在CircleImageView中:

import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.Bitmap;
import android.graphics.BitmapShader;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.ColorFilter;
import android.graphics.Matrix;
import android.graphics.Paint;
import android.graphics.RectF;
import android.graphics.Shader;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.ColorDrawable;
import android.graphics.drawable.Drawable;
import android.net.Uri;
import android.support.annotation.ColorInt;
import android.support.annotation.ColorRes;
import android.support.annotation.DrawableRes;
import android.util.AttributeSet;
import android.widget.ImageView;


public class CircleImageView extends ImageView {

    private static final ScaleType SCALE_TYPE = ScaleType.CENTER_CROP;

    private static final Bitmap.Config BITMAP_CONFIG = Bitmap.Config.ARGB_8888;
    private static final int COLORDRAWABLE_DIMENSION = 2;

    private static final int DEFAULT_BORDER_WIDTH = 0;
    private static final int DEFAULT_BORDER_COLOR = Color.BLACK;
    private static final int DEFAULT_FILL_COLOR = Color.TRANSPARENT;
    private static final boolean DEFAULT_BORDER_OVERLAY = false;

    private final RectF mDrawableRect = new RectF();
    private final RectF mBorderRect = new RectF();

    private final Matrix mShaderMatrix = new Matrix();
    private final Paint mBitmapPaint = new Paint();
    private final Paint mBorderPaint = new Paint();
    private final Paint mFillPaint = new Paint();

    private int mBorderColor = DEFAULT_BORDER_COLOR;
    private int mBorderWidth = DEFAULT_BORDER_WIDTH;
    private int mFillColor = DEFAULT_FILL_COLOR;

    private Bitmap mBitmap;
    private BitmapShader mBitmapShader;
    private int mBitmapWidth;
    private int mBitmapHeight;

    private float mDrawableRadius;
    private float mBorderRadius;

    private ColorFilter mColorFilter;

    private boolean mReady;
    private boolean mSetupPending;
    private boolean mBorderOverlay;
    private boolean mDisableCircularTransformation;

    public CircleImageView(Context context) {
        super(context);

        init();
    }

    public CircleImageView(Context context, AttributeSet attrs) {
        this(context, attrs, 0);
    }

    public CircleImageView(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);

        TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.CircleImageView, defStyle, 0);

        mBorderWidth = a.getDimensionPixelSize(R.styleable.CircleImageView_civ_border_width, DEFAULT_BORDER_WIDTH);
        mBorderColor = a.getColor(R.styleable.CircleImageView_civ_border_color, DEFAULT_BORDER_COLOR);
        mBorderOverlay = a.getBoolean(R.styleable.CircleImageView_civ_border_overlay, DEFAULT_BORDER_OVERLAY);
        mFillColor = a.getColor(R.styleable.CircleImageView_civ_fill_color, DEFAULT_FILL_COLOR);

        a.recycle();

        init();
    }

    private void init() {
        super.setScaleType(SCALE_TYPE);
        mReady = true;

        if (mSetupPending) {
            setup();
            mSetupPending = false;
        }
    }

    @Override
    public ScaleType getScaleType() {
        return SCALE_TYPE;
    }

    @Override
    public void setScaleType(ScaleType scaleType) {
        if (scaleType != SCALE_TYPE) {
            throw new IllegalArgumentException(String.format("ScaleType %s not supported.", scaleType));
        }
    }

    @Override
    public void setAdjustViewBounds(boolean adjustViewBounds) {
        if (adjustViewBounds) {
            throw new IllegalArgumentException("adjustViewBounds not supported.");
        }
    }

    @Override
    protected void onDraw(Canvas canvas) {
        if (mDisableCircularTransformation) {
            super.onDraw(canvas);
            return;
        }

        if (mBitmap == null) {
            return;
        }

        if (mFillColor != Color.TRANSPARENT) {
            canvas.drawCircle(mDrawableRect.centerX(), mDrawableRect.centerY(), mDrawableRadius, mFillPaint);
        }
        canvas.drawCircle(mDrawableRect.centerX(), mDrawableRect.centerY(), mDrawableRadius, mBitmapPaint);
        if (mBorderWidth > 0) {
            canvas.drawCircle(mBorderRect.centerX(), mBorderRect.centerY(), mBorderRadius, mBorderPaint);
        }
    }

    @Override
    protected void onSizeChanged(int w, int h, int oldw, int oldh) {
        super.onSizeChanged(w, h, oldw, oldh);
        setup();
    }

    @Override
    public void setPadding(int left, int top, int right, int bottom) {
        super.setPadding(left, top, right, bottom);
        setup();
    }

    @Override
    public void setPaddingRelative(int start, int top, int end, int bottom) {
        super.setPaddingRelative(start, top, end, bottom);
        setup();
    }

    public int getBorderColor() {
        return mBorderColor;
    }

    public void setBorderColor(@ColorInt int borderColor) {
        if (borderColor == mBorderColor) {
            return;
        }

        mBorderColor = borderColor;
        mBorderPaint.setColor(mBorderColor);
        invalidate();
    }

    /**
     * @deprecated Use {@link #setBorderColor(int)} instead
     */
    @Deprecated
    public void setBorderColorResource(@ColorRes int borderColorRes) {
        setBorderColor(getContext().getResources().getColor(borderColorRes));
    }

    /**
     * Return the color drawn behind the circle-shaped drawable.
     *
     * @return The color drawn behind the drawable
     * @deprecated Fill color support is going to be removed in the future
     */
    @Deprecated
    public int getFillColor() {
        return mFillColor;
    }

    /**
     * Set a color to be drawn behind the circle-shaped drawable. Note that
     * this has no effect if the drawable is opaque or no drawable is set.
     *
     * @param fillColor The color to be drawn behind the drawable
     * @deprecated Fill color support is going to be removed in the future
     */
    @Deprecated
    public void setFillColor(@ColorInt int fillColor) {
        if (fillColor == mFillColor) {
            return;
        }

        mFillColor = fillColor;
        mFillPaint.setColor(fillColor);
        invalidate();
    }

    /**
     * Set a color to be drawn behind the circle-shaped drawable. Note that
     * this has no effect if the drawable is opaque or no drawable is set.
     *
     * @param fillColorRes The color resource to be resolved to a color and
     *                     drawn behind the drawable
     * @deprecated Fill color support is going to be removed in the future
     */
    @Deprecated
    public void setFillColorResource(@ColorRes int fillColorRes) {
        setFillColor(getContext().getResources().getColor(fillColorRes));
    }

    public int getBorderWidth() {
        return mBorderWidth;
    }

    public void setBorderWidth(int borderWidth) {
        if (borderWidth == mBorderWidth) {
            return;
        }

        mBorderWidth = borderWidth;
        setup();
    }

    public boolean isBorderOverlay() {
        return mBorderOverlay;
    }

    public void setBorderOverlay(boolean borderOverlay) {
        if (borderOverlay == mBorderOverlay) {
            return;
        }

        mBorderOverlay = borderOverlay;
        setup();
    }

    public boolean isDisableCircularTransformation() {
        return mDisableCircularTransformation;
    }

    public void setDisableCircularTransformation(boolean disableCircularTransformation) {
        if (mDisableCircularTransformation == disableCircularTransformation) {
            return;
        }

        mDisableCircularTransformation = disableCircularTransformation;
        initializeBitmap();
    }

    @Override
    public void setImageBitmap(Bitmap bm) {
        super.setImageBitmap(bm);
        initializeBitmap();
    }

    @Override
    public void setImageDrawable(Drawable drawable) {
        super.setImageDrawable(drawable);
        initializeBitmap();
    }

    @Override
    public void setImageResource(@DrawableRes int resId) {
        super.setImageResource(resId);
        initializeBitmap();
    }

    @Override
    public void setImageURI(Uri uri) {
        super.setImageURI(uri);
        initializeBitmap();
    }

    @Override
    public void setColorFilter(ColorFilter cf) {
        if (cf == mColorFilter) {
            return;
        }

        mColorFilter = cf;
        applyColorFilter();
        invalidate();
    }

    @Override
    public ColorFilter getColorFilter() {
        return mColorFilter;
    }

    private void applyColorFilter() {
        if (mBitmapPaint != null) {
            mBitmapPaint.setColorFilter(mColorFilter);
        }
    }

    private Bitmap getBitmapFromDrawable(Drawable drawable) {
        if (drawable == null) {
            return null;
        }

        if (drawable instanceof BitmapDrawable) {
            return ((BitmapDrawable) drawable).getBitmap();
        }

        try {
            Bitmap bitmap;

            if (drawable instanceof ColorDrawable) {
                bitmap = Bitmap.createBitmap(COLORDRAWABLE_DIMENSION, COLORDRAWABLE_DIMENSION, BITMAP_CONFIG);
            } else {
                bitmap = Bitmap.createBitmap(drawable.getIntrinsicWidth(), drawable.getIntrinsicHeight(), BITMAP_CONFIG);
            }

            Canvas canvas = new Canvas(bitmap);
            drawable.setBounds(0, 0, canvas.getWidth(), canvas.getHeight());
            drawable.draw(canvas);
            return bitmap;
        } catch (Exception e) {
            e.printStackTrace();
            return null;
        }
    }

    private void initializeBitmap() {
        if (mDisableCircularTransformation) {
            mBitmap = null;
        } else {
            mBitmap = getBitmapFromDrawable(getDrawable());
        }
        setup();
    }

    private void setup() {
        if (!mReady) {
            mSetupPending = true;
            return;
        }

        if (getWidth() == 0 && getHeight() == 0) {
            return;
        }

        if (mBitmap == null) {
            invalidate();
            return;
        }

        mBitmapShader = new BitmapShader(mBitmap, Shader.TileMode.CLAMP, Shader.TileMode.CLAMP);

        mBitmapPaint.setAntiAlias(true);
        mBitmapPaint.setShader(mBitmapShader);

        mBorderPaint.setStyle(Paint.Style.STROKE);
        mBorderPaint.setAntiAlias(true);
        mBorderPaint.setColor(mBorderColor);
        mBorderPaint.setStrokeWidth(mBorderWidth);

        mFillPaint.setStyle(Paint.Style.FILL);
        mFillPaint.setAntiAlias(true);
        mFillPaint.setColor(mFillColor);

        mBitmapHeight = mBitmap.getHeight();
        mBitmapWidth = mBitmap.getWidth();

        mBorderRect.set(calculateBounds());
        mBorderRadius = Math.min((mBorderRect.height() - mBorderWidth) / 2.0f, (mBorderRect.width() - mBorderWidth) / 2.0f);

        mDrawableRect.set(mBorderRect);
        if (!mBorderOverlay && mBorderWidth > 0) {
            mDrawableRect.inset(mBorderWidth - 1.0f, mBorderWidth - 1.0f);
        }
        mDrawableRadius = Math.min(mDrawableRect.height() / 2.0f, mDrawableRect.width() / 2.0f);

        applyColorFilter();
        updateShaderMatrix();
        invalidate();
    }

    private RectF calculateBounds() {
        int availableWidth = getWidth() - getPaddingLeft() - getPaddingRight();
        int availableHeight = getHeight() - getPaddingTop() - getPaddingBottom();

        int sideLength = Math.min(availableWidth, availableHeight);

        float left = getPaddingLeft() + (availableWidth - sideLength) / 2f;
        float top = getPaddingTop() + (availableHeight - sideLength) / 2f;

        return new RectF(left, top, left + sideLength, top + sideLength);
    }

    private void updateShaderMatrix() {
        float scale;
        float dx = 0;
        float dy = 0;

        mShaderMatrix.set(null);

        if (mBitmapWidth * mDrawableRect.height() > mDrawableRect.width() * mBitmapHeight) {
            scale = mDrawableRect.height() / (float) mBitmapHeight;
            dx = (mDrawableRect.width() - mBitmapWidth * scale) * 0.5f;
        } else {
            scale = mDrawableRect.width() / (float) mBitmapWidth;
            dy = (mDrawableRect.height() - mBitmapHeight * scale) * 0.5f;
        }

        mShaderMatrix.setScale(scale, scale);
        mShaderMatrix.postTranslate((int) (dx + 0.5f) + mDrawableRect.left, (int) (dy + 0.5f) + mDrawableRect.top);

        mBitmapShader.setLocalMatrix(mShaderMatrix);
    }

}

六、在attrs中

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <declare-styleable name="CircleImageView">
        <attr name="civ_border_width" format="dimension" />
        <attr name="civ_border_color" format="color" />
        <attr name="civ_border_overlay" format="boolean" />
        <attr name="civ_fill_color" format="color" />
    </declare-styleable>
    <declare-styleable name="RangeSeekbar">
        <attr name="seekbarHeight" format="dimension" />
        <attr name="textSize" format="dimension" />
        <attr name="spaceBetween" format="dimension" />

        <attr name="leftCursorBackground" format="reference" />
        <attr name="rightCursorBackground" format="reference" />
        <attr name="markTextArray" format="reference" />

        <attr name="textColorNormal" format="color" />
        <attr name="textColorSelected" format="color" />
        <attr name="seekbarColorNormal" format="color" />
        <attr name="seekbarColorSelected" format="color" />

        <attr name="autoMoveDuration" format="integer" />

    </declare-styleable>
</resources>

最后感谢 hackware 提供的思路

作者:huangxiaoguo1 发表于2016/10/19 11:05:06 原文链接
阅读:48 评论:0 查看评论

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