android波纹动画,Android实现水波纹效果

一、效果

点击开始：

点击停止：

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

xmlns:tools="http://schemas.android.com/tools"

android:id="@+id/activity_main"

android:layout_width="match_parent"

android:layout_height="match_parent"

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" />

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" />

android:id="@+id/wave_view2"

android:layout_width="350dp"

android:layout_height="350dp"

android:layout_centerInParent="true"

android:layout_marginTop="10dp"

android:textSize="24dp" />

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 mCircleList = new ArrayList();

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 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

以上所述是小编给大家介绍的Android实现水波纹效果，希望对大家有所帮助，如果大家有任何疑问请给我留言，小编会及时回复大家的。在此也非常感谢大家对脚本之家网站的支持！

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