Android解决了字体选择的问题

package test.yyc.demo; import android.app.Dialog; import android.content.Context; import android.graphics.Canvas; import android.graphics.Color; import android.graphics.LinearGradient; import android.graphics.Paint; import android.graphics.RectF; import android.graphics.Shader; import android.graphics.SweepGradient; import android.os.Bundle; import android.util.Log; import android.view.MotionEvent; import android.view.View; import android.view.WindowManager; public class ColorPickerDialog extends Dialog { private final boolean debug = true; private final String TAG = "ColorPicker"; Context context; private String title;//标题 private int mInitialColor;//初始颜色 private OnColorChangedListener mListener; /** * 初始颜色黑色 * @param context * @param title 对话框标题 * @param listener 回调 */ public ColorPickerDialog(Context context, String title, OnColorChangedListener listener) { this(context, Color.BLACK, title, listener); } /** * * @param context * @param initialColor 初始颜色 * @param title 标题 * @param listener 回调 */ public ColorPickerDialog(Context context, int initialColor, String title, OnColorChangedListener listener) { super(context); this.context = context; mListener = listener; mInitialColor = initialColor; this.title = title; } @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); WindowManager manager = getWindow().getWindowManager(); float Hg = manager.getDefaultDisplay().getHeight(); float Wt = manager.getDefaultDisplay().getWidth(); int height = 0; int width = 0; if(Hg>Wt) { height = (int) (Hg * 0.5f); width = (int) (Wt * 0.7f); } else { height = (int) (Hg * 0.7f); width = (int) (Wt * 0.5f); } ColorPickerView myView = new ColorPickerView(context, height, width); setContentView(myView); setTitle(title); } private class ColorPickerView extends View { private Paint mPaint;//渐变色环画笔 private Paint mCenterPaint;//中间圆画笔 private Paint mLinePaint;//分隔线画笔 private Paint mRectPaint;//渐变方块画笔 private Shader rectShader;//渐变方块渐变图像 private float rectLeft;//渐变方块左x坐标 private float rectTop;//渐变方块右x坐标 private float rectRight;//渐变方块上y坐标 private float rectBottom;//渐变方块下y坐标 private final int[] mCircleColors;//渐变色环颜色 private final int[] mRectColors;//渐变方块颜色 private int mHeight;//View高 private int mWidth;//View宽 private float r;//色环半径(paint中部) private float centerRadius;//中心圆半径 private boolean downInCircle = true;//按在渐变环上 private boolean downInRect;//按在渐变方块上 private boolean highlightCenter;//高亮 private boolean highlightCenterLittle;//微亮 public ColorPickerView(Context context, int height, int width) { super(context); this.mHeight = height - 36; this.mWidth = width; setMinimumHeight(height - 36); setMinimumWidth(width); //渐变色环参数 mCircleColors = new int[] {0xFFFF0000, 0xFFFF00FF, 0xFF0000FF, 0xFF00FFFF, 0xFF00FF00,0xFFFFFF00, 0xFFFF0000}; Shader s = new SweepGradient(0, 0, mCircleColors, null); mPaint = new Paint(Paint.ANTI_ALIAS_FLAG); mPaint.setShader(s); mPaint.setStyle(Paint.Style.STROKE); mPaint.setStrokeWidth(50); r= width/ 2 * 0.7f - mPaint.getStrokeWidth() * 0.5f; // r = (height>width?(width/ 2 * 0.7f - mPaint.getStrokeWidth() )* 0.5f:height) ; //中心圆参数 mCenterPaint = new Paint(Paint.ANTI_ALIAS_FLAG); mCenterPaint.setColor(mInitialColor); mCenterPaint.setStrokeWidth(5); centerRadius = (r - mPaint.getStrokeWidth() / 2 ) * 0.7f; //边框参数 mLinePaint = new Paint(Paint.ANTI_ALIAS_FLAG); mLinePaint.setColor(Color.parseColor("#72A1D1")); mLinePaint.setStrokeWidth(4); //黑白渐变参数 // if(height>width) { mRectColors = new int[]{0xFF000000, mCenterPaint.getColor(), 0xFFFFFFFF}; mRectPaint = new Paint(Paint.ANTI_ALIAS_FLAG); mRectPaint.setStrokeWidth(5); rectLeft = -r - mPaint.getStrokeWidth() * 0.5f; rectTop = r + mPaint.getStrokeWidth() * 0.5f + mLinePaint.getStrokeMiter() * 0.5f + 15; rectRight = r + mPaint.getStrokeWidth() * 0.5f; rectBottom = rectTop + 50; } // else // { // mRectColors = new int[]{0xFF000000, mCenterPaint.getColor(), 0xFFFFFFFF}; // mRectPaint = new Paint(Paint.ANTI_ALIAS_FLAG); // mRectPaint.setStrokeWidth(5); // rectLeft = -r - mPaint.getStrokeWidth() * 0.5f; // rectTop = r + mPaint.getStrokeWidth() * 0.5f + // mLinePaint.getStrokeMiter() * 0.5f + 15; // rectRight = r + mPaint.getStrokeWidth() * 0.5f; // rectBottom = rectTop + 50; // } } @Override protected void onDraw(Canvas canvas) { //移动中心 // if(mWidth<mHeight) canvas.translate(mWidth / 2, mHeight / 2 - 50); // else canvas.translate(mWidth / 2-50, mHeight / 2 - 50); //画中心圆 canvas.drawCircle(0, 0, centerRadius, mCenterPaint); //是否显示中心圆外的小圆环 if (highlightCenter || highlightCenterLittle) { int c = mCenterPaint.getColor(); mCenterPaint.setStyle(Paint.Style.STROKE); if(highlightCenter) { mCenterPaint.setAlpha(0xFF); }else if(highlightCenterLittle) { mCenterPaint.setAlpha(0x90); } canvas.drawCircle(0, 0, centerRadius + mCenterPaint.getStrokeWidth(), mCenterPaint); mCenterPaint.setStyle(Paint.Style.FILL); mCenterPaint.setColor(c); } //画色环 canvas.drawOval(new RectF(-r, -r, r, r), mPaint); //画黑白渐变块 if(downInCircle) { mRectColors[1] = mCenterPaint.getColor(); } rectShader = new LinearGradient(rectLeft, 0, rectRight, 0, mRectColors, null, Shader.TileMode.MIRROR); mRectPaint.setShader(rectShader); canvas.drawRect(rectLeft, rectTop, rectRight, rectBottom, mRectPaint); float offset = mLinePaint.getStrokeWidth() / 2; canvas.drawLine(rectLeft - offset, rectTop - offset * 2, rectLeft - offset, rectBottom + offset * 2, mLinePaint);//左 canvas.drawLine(rectLeft - offset * 2, rectTop - offset, rectRight + offset * 2, rectTop - offset, mLinePaint);//上 canvas.drawLine(rectRight + offset, rectTop - offset * 2, rectRight + offset, rectBottom + offset * 2, mLinePaint);//右 canvas.drawLine(rectLeft - offset * 2, rectBottom + offset, rectRight + offset * 2, rectBottom + offset, mLinePaint);//下 super.onDraw(canvas); } @Override public boolean onTouchEvent(MotionEvent event) { float x = event.getX() - mWidth / 2; float y = event.getY() - mHeight / 2 + 50; boolean inCircle = inColorCircle(x, y, r + mPaint.getStrokeWidth() / 2, r - mPaint.getStrokeWidth() / 2); boolea