问题描述

Android自定义View画笔颜色改变问题（画笔颜色改变了，但是实际上ABCD这些字母的颜色没变）

package com.eage.tbw.view;

import com.eage.tbw.R;
import com.eage.tbw.R.color;

import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.util.AttributeSet;
import android.view.MotionEvent;
import android.view.View;
import android.widget.TextView;

/**

• A-Z字母的View
• lxm
  */
  public class LetterView extends View {
  private static final String[] LETTER=new String[]{"A","B","C","D","E","F","G","H","I","J","K","L","M","N","O","P","Q","R","S","T","U","V","W","X","Y","Z","#"};

  private Paint paint;
  private int textSize;
  private int choice;

  private TextView outerTV;

  private LetterOnTouchCallBack letterOnTouchCallBack;

  public void setTextView(TextView textView){
  outerTV=textView;

  }

  public LetterView(Context context) {
  this(context, null);
  }

  public LetterView(Context context, AttributeSet attrs) {
  this(context, attrs, 0);

  }

  public LetterView(Context context, AttributeSet attrs, int defStyleAttr) {
  super(context, attrs, defStyleAttr);
  TypedArray typedArray=context.getTheme().obtainStyledAttributes(attrs, R.styleable.LetterView, defStyleAttr, 0);

  textSize=typedArray.getInt(R.styleable.LetterView_text, 27);
  
  typedArray.recycle();
  initView();
  

  }

  private void initView() {
  paint=new Paint();

  paint.setTextSize(textSize);
  paint.setColor(color.custom_yellow);
  paint.setAntiAlias(true);
  
  choice=-1;
  

  }

  @Override
  protected void onDraw(Canvas canvas) {
  super.onDraw(canvas);

  int height=getHeight();
  int width=getWidth();
  
  int length=LETTER.length;
  int itemHeigth=height/length;
  
  for(int i=0;i<length;i++){
      if(i==choice-1){
          paint.setColor(color.custom_yellow);
          paint.setTextSize(32);
      }else{
          paint.setColor(color.custom_yellow);
          paint.setTextSize(textSize);
  
      }
  
      float y=(i+1)*itemHeigth;
      float x=(width-paint.measureText(LETTER[i]))/2;
      canvas.drawText(LETTER[i], x, y, paint);
  }
  

  }

  //重写触摸事件
  @Override
  public boolean dispatchTouchEvent(MotionEvent event) {

  final LetterOnTouchCallBack callBack = letterOnTouchCallBack;
  
  float  y=event.getY();
  switch (event.getAction()) {
  case MotionEvent.ACTION_UP:
      choice=-1;
      if(outerTV!=null){
          outerTV.setVisibility(View.GONE);
      }
      setBackgroundColor(Color.WHITE);
      invalidate();
      break;
  
  default:
      int length=LETTER.length;
      int position= (int) (y/getHeight()*LETTER.length);
      setBackgroundColor(Color.parseColor("#E5E5E5"));
      if(1<=position&&position<=length){
          //将选中的字母传回到MainActivity中
          if(callBack!=null){
              callBack.onTouchingLetterChanged(LETTER[position-1]);
          }
          if(outerTV!=null){
              outerTV.setText(LETTER[position-1]);
              outerTV.setVisibility(View.VISIBLE);
          }
          choice=position;
          invalidate();
      }
      break;
  }
  
  return true;
  

  }

  // 设置监听

  public void setOnLetterCallBack(LetterOnTouchCallBack letterOnTouchCallBack) {
      this.letterOnTouchCallBack = letterOnTouchCallBack;
  }
  
  //接口
  public interface LetterOnTouchCallBack {
  
      public void onTouchingLetterChanged(String s);
  
  }
  

}

解决方案

就是不变颜色啊，求大神告诉下问题

解决方案二：

你的ondraw事件里
paint.setColor(color.custom_yellow);
都写死了啊

解决方案三：

这颜色都没变吧

 if(i==choice-1){
    paint.setColor(color.custom_yellow);
    paint.setTextSize(32);
}else{
    paint.setColor(color.custom_yellow);
    paint.setTextSize(textSize);

}

解决方案四：

同上，你就设置过一次颜色，都是
paint.setColor(color.custom_yellow);

肯定都一样啊

解决方案五：

我现在代码实现的效果就是，默认黑色。然后手去滑动会变颜色和字体大小。 但是现在需要的是改变他的默认颜色。
把黑色改为黄色。我代码故意设死了黄色。但是他还是黑色