Android字体描边Demo

package com.example.textBorder; import android.content.Context; import android.content.res.TypedArray; import android.graphics.Canvas; import android.graphics.Paint; import android.text.TextPaint; import android.util.AttributeSet; import android.widget.TextView; /** * Created by Maijx on 2015/5/6. */ public class StrokeTextView extends TextView { private int strokeColor; private int strokeWidth; private TextPaint strokePaint; public StrokeTextView(Context context) { super(context); } public StrokeTextView(Context context, AttributeSet attrs) { this(context, attrs, 0); } public StrokeTextView(Context context, AttributeSet attrs, int defStyleAttr) { super(context, attrs, defStyleAttr); TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.StrokeTextView, defStyleAttr, 0); strokeColor = a.getColor(R.styleable.StrokeTextView_border_color, 0); strokeWidth = a.getDimensionPixelSize(R.styleable.StrokeTextView_border_width, 0); } @Override protected void onDraw(Canvas canvas) { if (strokeWidth > 0) { if (strokePaint == null) { strokePaint = new TextPaint(); } // 复制原来TextViewg画笔中的一些参数 TextPaint paint = getPaint(); strokePaint.setTextSize(paint.getTextSize()); strokePaint.setFlags(paint.getFlags()); strokePaint.setTypeface(paint.getTypeface()); strokePaint.setAlpha(paint.getAlpha()); // 自定义描边效果 strokePaint.setStyle(Paint.Style.FILL_AND_STROKE);// 设置不同Style有不同效果哟 strokePaint.setColor(strokeColor); strokePaint.setStrokeWidth(strokeWidth); String text = getText().toString(); //在文本底层画出带描边的文本 canvas.drawText(text, (getWidth() - strokePaint.measureText(text)) / 2, getBaseline(), strokePaint); } super.onDraw(canvas); } }