Created
October 13, 2014 15:55
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TextWithUnit , upper right corner.
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| package com.example.zhaosam.textviewtest; | |
| import android.content.Context; | |
| import android.graphics.Canvas; | |
| import android.graphics.Color; | |
| import android.graphics.Paint; | |
| import android.graphics.Rect; | |
| import android.util.AttributeSet; | |
| import android.widget.TextView; | |
| /** | |
| * Created by zhaosam on 14-10-13. | |
| */ | |
| public class TextWithUnit extends TextView { | |
| private Paint mPaint; | |
| private float mCornerSize; | |
| private Context mContext; | |
| public TextWithUnit(Context context) { | |
| super(context); | |
| init(context); | |
| } | |
| public TextWithUnit(Context context, AttributeSet attrs) { | |
| super(context, attrs); | |
| init(context); | |
| } | |
| public TextWithUnit(Context context, AttributeSet attrs, int defStyle) { | |
| super(context, attrs, defStyle); | |
| init(context); | |
| } | |
| private void init(Context context) { | |
| mContext = context; | |
| mPaint = new Paint(); | |
| mPaint.setAntiAlias(true); | |
| mPaint.setColor(Color.RED); | |
| mCornerSize = getTextSize() * 0.6f; | |
| if (mCornerSize > 40) { | |
| mCornerSize = 40; | |
| } | |
| mPaint.setTextSize(mCornerSize); | |
| } | |
| @Override | |
| protected void onDraw(Canvas canvas) { | |
| super.onDraw(canvas); | |
| // 不要忘了设置 Padding | |
| String text = (String) getText(); | |
| Rect bounds = new Rect(); | |
| getPaint().getTextBounds(text, 0, text.length(), bounds); | |
| canvas.drawText("%", getPaddingLeft() + bounds.right, | |
| (canvas.getHeight() + bounds.top) / 2 + mPaint.measureText("C"), | |
| mPaint); | |
| } | |
| } |
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