package com.huwei.example.test;

import android.content.Context;

import android.graphics.Canvas;

import android.graphics.LinearGradient;

import android.graphics.Paint;

import android.graphics.Rect;

import android.graphics.Shader;

import android.util.AttributeSet;

import android.widget.TextView;

public class MyTextView extends TextView {

    private LinearGradient mLinearGradient;

    private Paint mPaint;

    private int mViewWidth = 0;

    private Rect mTextBound = new Rect();

    public MyTextView(Context context, AttributeSet attrs) {

        super(context, attrs);

    }

    @Override

    protected void onDraw(Canvas canvas) {

        mViewWidth = getMeasuredWidth();

        mPaint = getPaint();

        String mTipText = getText().toString();

        mPaint.getTextBounds(mTipText, 0, mTipText.length(), mTextBound);

        mLinearGradient = new LinearGradient(0, 0, mViewWidth, 0,

                new int[] {  0xFF429321, 0xFFB4EC51 },

                null, Shader.TileMode.REPEAT);

        mPaint.setShader(mLinearGradient);

        canvas.drawText(mTipText, getMeasuredWidth() / 2 - mTextBound.width() / 2, getMeasuredHeight() / 2 +   mTextBound.height()/2, mPaint);

    }

}