Android(安卓)刮刮乐
16lz
2021-12-04
<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:paddingBottom="@dimen/activity_vertical_margin" android:paddingLeft="@dimen/activity_horizontal_margin" android:paddingRight="@dimen/activity_horizontal_margin" android:paddingTop="@dimen/activity_vertical_margin" tools:context=".MainActivity" > <!-- <com.example.rubbler.Text_Rubbler android:id="@+id/rubbler" android:layout_width="200dp" android:layout_height="200dp" android:layout_centerHorizontal="true" android:layout_centerVertical="true" android:gravity="center" android:text="@string/hello_world" /> --> <com.example.rubbler.Image_Rubbler android:id="@+id/rubbler" android:background="@drawable/girl1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_centerHorizontal="true" android:layout_centerVertical="true" android:gravity="center" /></RelativeLayout>
package com.example.rubbler;import com.example.rubbler.R;import android.os.Bundle;import android.app.Activity;import android.view.Menu;public class MainActivity extends Activity{ @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); //Text_Rubbler rubbler = (Text_Rubbler)this.findViewById(R.id.rubbler); Image_Rubbler rubbler = (Image_Rubbler) this.findViewById(R.id.rubbler); rubbler.beginRubbler(0xffff0000, 40, 50); } @Override public boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.main, menu); return true; }} package com.example.rubbler;import android.content.Context;import android.graphics.Bitmap;import android.graphics.Bitmap.Config;import android.graphics.Canvas;import android.graphics.Color;import android.graphics.Paint;import android.graphics.Path;import android.graphics.PorterDuff;import android.graphics.PorterDuffXfermode;import android.util.AttributeSet;import android.view.MotionEvent;import android.view.animation.AlphaAnimation;import android.view.animation.Animation;import android.view.animation.LinearInterpolator;import android.widget.ImageView;public class Image_Rubbler extends ImageView{ private float TOUCH_TOLERANCE; //填充距离，使线条更自然，柔和,值越小，越柔和。 // private final int bgColor; private Bitmap mBitmap; private Canvas mCanvas; private Paint mPaint; private Path mPath; private float mX, mY; private boolean isDraw = false; public Image_Rubbler(Context context) { super(context); } public Image_Rubbler(Context context, AttributeSet attrs, int defStyle) { super(context, attrs, defStyle); // bgColor = attrs.getAttributeIntValue("http://schemas.android.com/apk/res/android", "textColor", 0xFFFFFF); // System.out.println("Color:"+bgColor); } public Image_Rubbler(Context context, AttributeSet attrs) { super(context, attrs); // bgColor = attrs.getAttributeIntValue("http://schemas.android.com/apk/res/android", "textColor", 0xFFFFFF); // System.out.println(bgColor); // System.out.println(attrs.getAttributeValue("http://schemas.android.com/apk/res/android", "layout_width")); } @Override protected void onDraw(Canvas canvas) { super.onDraw(canvas); if (isDraw) { mCanvas.drawPath(mPath, mPaint); canvas.drawBitmap(mBitmap, 0, 0, null); } } /** * 开启檫除功能 * @param bgColor 覆盖的背景颜色 * @param paintStrokeWidth 触点（橡皮）宽度 * @param touchTolerance 填充距离,值越小，越柔和。 */ public void beginRubbler(final int bgColor , final int paintStrokeWidth , float touchTolerance) { TOUCH_TOLERANCE = touchTolerance; //设置画笔 mPaint = new Paint(); //mPaint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.DST_OUT)); //或者 mPaint.setAlpha(0); mPaint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.DST_IN)); mPaint.setAntiAlias(true); mPaint.setDither(true); mPaint.setStyle(Paint.Style.STROKE); mPaint.setStrokeJoin(Paint.Join.ROUND); //前圆角 mPaint.setStrokeCap(Paint.Cap.ROUND); //后圆角 mPaint.setStrokeWidth(paintStrokeWidth); //笔宽 //痕迹 mPath = new Path(); //覆盖 // if (getLayoutParams().width == LayoutParams.FILL_PARENT) { // // } int width = this.getResources().getDrawable(R.drawable.girl1).getIntrinsicWidth(); int height = this.getResources().getDrawable(R.drawable.girl1).getIntrinsicHeight(); mBitmap = Bitmap.createBitmap(width, height, Config.ARGB_8888); mCanvas = new Canvas(mBitmap); mCanvas.drawColor(bgColor); isDraw = true; } @Override public boolean onTouchEvent(MotionEvent event) { if (!isDraw) { return true; } switch (event.getAction()) { case MotionEvent.ACTION_DOWN: //触点按下 // touchDown(event.getRawX(),event.getRawY()); touchDown(event.getX(), event.getY()); invalidate(); break; case MotionEvent.ACTION_MOVE: //触点移动 touchMove(event.getX(), event.getY()); invalidate(); break; case MotionEvent.ACTION_UP: //触点弹起 touchUp(event.getX(), event.getY()); invalidate(); break; default: break; } return true; } private void touchDown(float x , float y) { mPath.reset(); mPath.moveTo(x, y); mX = x; mY = y; } private void touchMove(float x , float y) { float dx = Math.abs(x - mX); float dy = Math.abs(y - mY); if (dx >= TOUCH_TOLERANCE || dy >= TOUCH_TOLERANCE) { mPath.quadTo(mX, mY, (x + mX) / 2, (y + mY) / 2); mX = x; mY = y; } } private void touchUp(float x , float y) { mPath.lineTo(x, y); mCanvas.drawPath(mPath, mPaint); mPath.reset(); int w = mBitmap.getWidth(); int h = mBitmap.getHeight(); int[] pixels = new int[w * h]; try { /* 参数 pixels 接收位图颜色值的数组 offset 写入到pixels[]中的第一个像素索引值 stride pixels[]中的行间距个数值(必须大于等于位图宽度)。可以为负数 x 从位图中读取的第一个像素的x坐标值。 y 从位图中读取的第一个像素的y坐标值 width 从每一行中读取的像素宽度 height 读取的行数 */ mBitmap.getPixels(pixels, 0, w, 0, 0, w, h); int rubblerCount = 0; int bitmapCount = pixels.length; for (int i = 0; i < bitmapCount; i++) { if (pixels[i] != 0xffff0000) { rubblerCount++; } } if (rubblerCount > bitmapCount * 0.3) { setFlickerAnimation(this); Paint paint = new Paint(); paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.CLEAR)); mCanvas.drawPaint(paint); isDraw = false; } } catch (Exception e) { e.printStackTrace(); } } //闪烁 private void setFlickerAnimation(ImageView iv_chat_head) { final Animation animation = new AlphaAnimation(1, 0); // Change alpha from fully visible to invisible animation.setDuration(50); // duration - half a second animation.setInterpolator(new LinearInterpolator()); // do not alter animation rate // animation.setRepeatCount(Animation.INFINITE); // Repeat animation infinitely // animation.setRepeatCount(2); // Repeat animation infinitely animation.setRepeatMode(Animation.REVERSE); // iv_chat_head.setAnimation(animation); }} package com.example.rubbler;import android.content.Context;import android.graphics.Bitmap;import android.graphics.Bitmap.Config;import android.graphics.Canvas;import android.graphics.Color;import android.graphics.Paint;import android.graphics.Path;import android.graphics.PorterDuff;import android.graphics.PorterDuffXfermode;import android.util.AttributeSet;import android.view.MotionEvent;import android.widget.TextView;public class Text_Rubbler extends TextView{ private float TOUCH_TOLERANCE; //填充距离，使线条更自然，柔和,值越小，越柔和。 // private final int bgColor; private Bitmap mBitmap; private Canvas mCanvas; private Paint mPaint; private Path mPath; private float mX, mY; private boolean isDraw = false; public Text_Rubbler(Context context) { super(context); } public Text_Rubbler(Context context, AttributeSet attrs, int defStyle) { super(context, attrs, defStyle); // bgColor = attrs.getAttributeIntValue("http://schemas.android.com/apk/res/android", "textColor", 0xFFFFFF); // System.out.println("Color:"+bgColor); } public Text_Rubbler(Context context, AttributeSet attrs) { super(context, attrs); // bgColor = attrs.getAttributeIntValue("http://schemas.android.com/apk/res/android", "textColor", 0xFFFFFF); // System.out.println(bgColor); // System.out.println(attrs.getAttributeValue("http://schemas.android.com/apk/res/android", "layout_width")); } @Override protected void onDraw(Canvas canvas) { super.onDraw(canvas); if (isDraw) { mCanvas.drawPath(mPath, mPaint); // mCanvas.drawPoint(mX, mY, mPaint); canvas.drawBitmap(mBitmap, 0, 0, null); } } /** * 开启檫除功能 * @param bgColor 覆盖的背景颜色 * @param paintStrokeWidth 触点（橡皮）宽度 * @param touchTolerance 填充距离,值越小，越柔和。 */ public void beginRubbler(final int bgColor , final int paintStrokeWidth , float touchTolerance) { TOUCH_TOLERANCE = touchTolerance; //设置画笔 mPaint = new Paint(); // mPaint.setAlpha(0); //画笔划过的痕迹就变成透明色了 mPaint.setColor(Color.BLACK); //此处不能为透明色 mPaint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.DST_OUT)); //或者 // mPaint.setAlpha(0); // mPaint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.DST_IN)); mPaint.setAntiAlias(true); mPaint.setDither(true); mPaint.setStyle(Paint.Style.STROKE); mPaint.setStrokeJoin(Paint.Join.ROUND); //前圆角 mPaint.setStrokeCap(Paint.Cap.ROUND); //后圆角 mPaint.setStrokeWidth(paintStrokeWidth); //笔宽 //痕迹 mPath = new Path(); ; //覆盖 // if (getLayoutParams().width == LayoutParams.FILL_PARENT) { // // } mBitmap = Bitmap.createBitmap(getLayoutParams().width, getLayoutParams().height, Config.ARGB_8888); mCanvas = new Canvas(mBitmap); mCanvas.drawColor(bgColor); isDraw = true; } @Override public boolean onTouchEvent(MotionEvent event) { if (!isDraw) { return true; } switch (event.getAction()) { case MotionEvent.ACTION_DOWN: //触点按下 // touchDown(event.getRawX(),event.getRawY()); touchDown(event.getX(), event.getY()); invalidate(); break; case MotionEvent.ACTION_MOVE: //触点移动 touchMove(event.getX(), event.getY()); invalidate(); break; case MotionEvent.ACTION_UP: //触点弹起 touchUp(event.getX(), event.getY()); invalidate(); break; default: break; } return true; } private void touchDown(float x , float y) { mPath.reset(); mPath.moveTo(x, y); mX = x; mY = y; } private void touchMove(float x , float y) { float dx = Math.abs(x - mX); float dy = Math.abs(y - mY); if (dx >= TOUCH_TOLERANCE || dy >= TOUCH_TOLERANCE) { mPath.quadTo(mX, mY, (x + mX) / 2, (y + mY) / 2); mX = x; mY = y; } } private void touchUp(float x , float y) { mPath.lineTo(x, y); mCanvas.drawPath(mPath, mPaint); mPath.reset(); }} 更多相关文章
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