package com.sb.testzdyview;
import android.annotation.SuppressLint;
import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.drawable.Drawable;
import android.util.AttributeSet;
import android.view.Gravity;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.RelativeLayout;
import android.widget.TextView;
@SuppressLint("NewApi") public class Topbar extends RelativeLayout {
private Button leftButton,rightButton;
private TextView tvTitle;
private LayoutParams leftParam,rightParam,titleParam;
private int leftTextColor;
private Drawable leftBackgroud;
private String leftText;
private int rightTextColor;
private Drawable rightBackgroud;
private String rightText;
private float titleTextSize;
private int titleTextColor;
private String title;
@SuppressLint("NewApi") public Topbar(Context context, AttributeSet attrs) {
super(context, attrs);
// 得到atts中的自定义属相并赋给ta集合
TypedArray ta=context.obtainStyledAttributes(attrs, R.styleable.Topbar);
//相当于初始化atts中的属性,在下面的方法中有两个默认的参数常用到，index，defvalue:默认值
leftTextColor=ta.getColor(R.styleable.Topbar_leftTextColor, 0);
leftBackgroud=ta.getDrawable(R.styleable.Topbar_leftBackgroud);
leftText=ta.getString(R.styleable.Topbar_leftText);
rightTextColor=ta.getColor(R.styleable.Topbar_leftTextColor, 0);
rightBackgroud=ta.getDrawable(R.styleable.Topbar_leftBackgroud);
rightText=ta.getString(R.styleable.Topbar_rightText);
titleTextSize=ta.getDimension(R.styleable.Topbar_titleTextSize, 0);
titleTextColor=ta.getColor(R.styleable.Topbar_titleTextColor, 0);
title=ta.getString(R.styleable.Topbar_title);
ta.recycle();//回收避免浪费资源，清除缓存
//初始化用到的三个控件
leftButton=new Button(context);
rightButton=new Button(context);
tvTitle=new TextView(context);
//把用到的控件和新定义的属性关联在一起
leftButton.setTextColor(leftTextColor);
leftButton.setBackground(leftBackgroud);
leftButton.setText(leftText);
rightButton.setTextColor(rightTextColor);
rightButton.setBackground(rightBackgroud);
rightButton.setText(rightText);
tvTitle.setTextSize(titleTextSize);
tvTitle.setTextColor(titleTextColor);
tvTitle.setText(title);
//设置tvTitlt居中
tvTitle.setGravity(Gravity.CENTER);
//给viewgroup添加背景色
setBackgroundColor(0xfff59563);
//定义leftParam的狂傲属性
leftParam=new LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT,LayoutParams.WRAP_CONTENT);
//给leftParam增加一个规则,在viewGroup中居左对齐
leftParam.addRule(RelativeLayout.ALIGN_PARENT_LEFT,TRUE);
//把leftButton加入到leftParam中
addView(leftButton,leftParam);
rightParam=new LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT,LayoutParams.WRAP_CONTENT);
//给leftParam增加一个规则,在viewGroup中居左对齐
rightParam.addRule(RelativeLayout.ALIGN_PARENT_RIGHT,TRUE);
//把leftButton加入到leftParam中
addView(rightButton,rightParam);
titleParam=new LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT,LayoutParams.WRAP_CONTENT);
titleParam.addRule(RelativeLayout.CENTER_IN_PARENT,TRUE);
addView(tvTitle,titleParam);
}
} |
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