小程序源码 学习相关 圆环菜单，只有你想不到的，没有做不到的.rar

package com.qsa; import android.content.Context; import android.graphics.Bitmap; import android.graphics.BitmapFactory; import android.graphics.Canvas; import android.graphics.Color; import android.graphics.Paint; import android.graphics.PointF; import android.util.FloatMath; import android.view.MotionEvent; import android.view.View; import android.widget.Toast; public class NewView extends View { protected static int getReturn = -1; private Paint mPaint = new Paint(); // stone列表 private BigStone[] mStones; int mode = NONE; static final int NONE = 0; static final int DRAG = 1; static final int ZOOM = 2; private BigStone[] mMenus; private BigStone[] addMenus = new BigStone[MENUS]; // 数目 private static int STONE_COUNT = 5; private static int MENUS = 4; // 圆心坐标 private float mPointX = 0, mPointY = 0; private int flagwai = 0; private int flag = 0; // 半径 private int mRadius = 0; // 每两个点间隔的角度 private int mDegreeDelta; private float maxX, maxY, minX, minY; public NewView(Context context, int px, int py, int radius) { super(context); mPointX = px; mPointY = py; mRadius = radius; setBackgroundResource(R.drawable.menubkground); setupStones(); computeCoordinates(); } float oldDist = 1f; PointF start = new PointF(); PointF mid = new PointF(); int change = 0; @Override public boolean dispatchTouchEvent(MotionEvent e) { dumpEvent(e); switch (e.getAction() & MotionEvent.ACTION_MASK) { case MotionEvent.ACTION_DOWN: for (int i = 0; i < STONE_COUNT; i++) { if (e.getX() >= mStones[i].x - 20 && e.getX() <= mStones[i].x + 40 && e.getY() >= mStones[i].y && e.getY() <= mStones[i].y + 40) { if (i < 5) { getReturn = Integer.valueOf(mStones[i].text); } else { getReturn = Integer.valueOf(mStones[i].text) + 5; } Toast.makeText(getContext(), String.valueOf(getReturn), Toast.LENGTH_SHORT).show(); } } mode = DRAG; return true; case MotionEvent.ACTION_POINTER_DOWN: oldDist = spacing(e); if (oldDist > 100f) { mode = ZOOM; } return true; case MotionEvent.ACTION_MOVE: GetMaxMin(e); if (mode == DRAG) { // System.out.println("move:mode == DRAG"); } else if (mode == ZOOM) { float newDist = spacing(e); if (newDist > 100f) { /* * if (change == 0) { change = 1; * * resetStonesAngle(e.getX(), e.getY()); * computeCoordinates(); invalidate(); } */ } } int a = 0; for (int i = 0; i < MENUS; i++) { if (e.getX() > mMenus[i].x - 40 && e.getX() < mMenus[i].x + 40 && e.getY() > mMenus[i].y - 40 && e.getY() < mMenus[i].y + 40) { mMenus[i].x = e.getX(); mMenus[i].y = e.getY(); flag = 1; computeCoordinates(); postInvalidate(); if (e.getX() < maxX && e.getX() > minX && e.getY() < maxY && e.getY() > minY) { if (mMenus[i].isVisible) { for (int j = 0; j < MENUS; j++) { if (addMenus[j] == null && a == 0) { addMenus[j] = mMenus[i]; a = 1; } } STONE_COUNT++; mDegreeDelta = 360 / STONE_COUNT; mStones = new BigStone[STONE_COUNT]; flagwai = 1; int angle = 0; BigStone stone; for (int index = 0; index < STONE_COUNT; index++) { stone = new BigStone(); if (index < 5) { stone.bitmap = BitmapFactory .decodeResource(getResources(), R.drawable.menu1 + index); stone.text = String.valueOf(1 + index); } else { stone.bitmap = addMenus[index - 5].bitmap; stone.text = addMenus[index - 5].text; } stone.angle = angle; angle += mDegreeDelta; mStones[index] = stone; } mMenus[i].isVisible = false; } } break; } } if (e.getX() < maxX && e.getX() > minX && e.getY() < maxY && e.getY() > minY) { if (e.getX() < maxX - 80 && e.getX() > minX + 81 && e.getY() < maxY - 80 && e.getY() > minY + 81) { mPointX = e.getX(); mPointY = e.getY(); } resetStonesAngle(e.getX(), e.getY()); computeCoordinates(); invalidate(); } break; case MotionEvent.ACTION_UP: // System.out.println("ACTION_UP:" + e.getX() + " " + e.getY()); // Log.d(TAG, "dispatchTouchEvent action:ACTION_UP"); break; case MotionEvent.ACTION_POINTER_UP: mode = NONE; // System.out.println("Pointer_up: mode = NONE;"); // Log.d(TAG, "dispatchTouchEvent action:ACTION_CANCEL"); break; } return super.dispatchTouchEvent(e); } private void GetMaxMin(MotionEvent e) { float tempx; float tempy; for (int i = 0; i < STONE_COUNT; i++) { for (int j = 0; j < STONE_COUNT; j++) { if (mStones[i].x < mStones[j].x) { tempx = mStones[i].x; mStones[i].x = mStones[j].x; mStones[j].x = tempx; } if (mStones[i].y < mStones[j].y) { tempy = mStones[i].y; mStones[i].y = mStones[j].y; mStones[j].y = tempy; } } } maxX = mStones[STONE_COUNT - 1].x; minX = mStones[0].x; maxY = mStones[STONE_COUNT - 1].y; minY = mStones[0].y; // System.out.println(maxX+" "+minX+" "+maxY+" "+minY); } @Override public void onDraw(Canvas canvas) { Paint paint = new Paint(); paint.setAntiAlias(true); paint.setColor(Color.WHITE); paint.setStyle(Paint.Style.FILL); paint.setAlpha(0x30); if (change == 0) { canvas.drawCircle(mPointX, mPointY, mRadius - 80, paint); } // xiaoyuan paint.setStyle(Paint.Style.FILL); paint.setAntiAlias(true); paint.setColor(Color.BLUE); paint.setAlpha(0x30); if (change == 0) { canvas.drawCircle(mPointX, mPointY, mRadius + 41, paint); // dayuan } if (change == 1) { // manzu yi ge tiao jian bu huizhi yuanpan caidan ,hui zhi juxing // caidan canvas.drawRect(800, 240, 0, 140, paint); } for (int i = 0; i < MENUS; i++) { if (!mMenus[i].isVisible) continue; drawMenus(canvas, mMenus[i].bitmap, mMenus[i].x, mMenus[i].y); } for (int index = 0; index < STONE_COUNT; index++) { if (!mStones[index].isVisible) continue; drawInCenter(canvas, mStones[index].bitmap, mStones[index].x, mStones[index].y, mStones[index].text); } } void drawMenus(Canvas canvas, Bitmap b, float x, float y) { // System.out.println(x+" "+y); // System.out.println(":"+b.getHeight()+" "+b.getWidth()); canvas.drawBitmap(b, x - b.getWidth() / 2, y - b.getHeight() / 2, null); // tubiao // System.out.println(x + " " + y); } void drawInCenter(Canvas canvas, Bitmap bitmap, float left, float top, String text) { canvas.drawText(text, left, top, mPaint); canvas.drawBitmap(bitmap, left - bitmap.getWidth() / 2, top - bitmap.getHeight() / 2, null); } private void resetStonesAngle(float x, float y) { int angle = computeCurrentAngle(x, y); // Log.d("RoundSpinView", "angle:" + angle); for (int index = 0; index < STONE_COUNT; index++) { mStones[index].angle = angle; angle += mDegreeDelta; } } private int computeCurrentAngle(float x, float y) { float distance = (float) Math .sqrt(((x - mPointX) * (x - mPointX) + (y - mPointY) * (y - mPointY))); int degree = (int) (Math.acos((x - mPointX) / distance) * 180 / Math.PI); if (y < mPointY) { degree = -degree; } // Log.d("RoundSpinView", "x:" + x + ",y:" + y + ",degree:" + degree); return degree; } private void computeCoordinates() { BigStone stone; BigStone menus; for (int index = 0; index < STONE_COUNT; index++) { stone = mStones[index]; stone.x = mPointX + (float) (mRadius * Math.cos(stone.angle * Math.PI / 180)); stone.y = mPointY + (float) (mRadius * Math.sin(stone.angle * Math.PI / 180)); } if (flag == 0) { for (int i = 0; i < MENUS; i++) { menus = mMenus[i]; switch (i) { case 0: menus.x = 300 * 1.8f; menus.y = 50; break; case 1: menu