Android中View自定义组合控件的基本编写方法

<?xml version="1.0" encoding="utf-8"?> 
<resources> 
  <declare-styleable name="TitleBar"> 
 
    <attr name="titleBar_center_text_size" format="dimension"/> 
    <attr name="titleBar_center_text" format="string"/> 
    <attr name="titleBar_center_textColor" format="color"/> 
 
    <attr name="titleBar_left_bg" format="reference"/> 
 
    <attr name="titleBar_right_text_size" format="dimension"/> 
    <attr name="titleBar_right_text" format="string"/> 
    <attr name="titleBar_right_textColor" format="color"/> 
 
  </declare-styleable> 
 
</resources> 

package com.xiong.demo1; 
 
import android.content.Context; 
import android.content.res.TypedArray; 
import android.graphics.Color; 
import android.util.AttributeSet; 
import android.util.TypedValue; 
import android.view.View; 
import android.view.ViewGroup; 
import android.widget.ImageView; 
import android.widget.RelativeLayout; 
import android.widget.TextView; 
 
public class TitleBarView extends RelativeLayout { 
 
  private ItitleOnChangeLister mItitleOnChangeLister; 
 
  private ImageView mImgLeft; 
  private TextView mTxtCenter, mTxtRigth; 
 
  private float mTitleCenterTextSize;//标题字体大小 
  private String mTitleCenterText;//标题文字 
  private int mTitleCenterTextColor;//标题颜色 
 
  private int mLeftBg;//左边返回按钮 
 
  private float mTitleRigthTextSize;//标题字体大小 
  private String mTitleRigthText;//标题文字 
  private int mTitleRigthColor;//标题颜色 
 
  public TitleBarView(Context context, AttributeSet attrs) { 
    super(context, attrs); 
    int defualtSize = (int) TypedValue.applyDimension( 
        TypedValue.COMPLEX_UNIT_SP, 16, getResources().getDisplayMetrics()); 
    TypedArray typedArray = getContext().obtainStyledAttributes(attrs, R.styleable.TitleBar); 
    mTitleCenterTextSize = typedArray.getDimension(R.styleable.TitleBar_titleBar_center_text_size, defualtSize); 
    mTitleCenterText = typedArray.getString(R.styleable.TitleBar_titleBar_center_text); 
    mTitleCenterTextColor = typedArray.getColor(R.styleable.TitleBar_titleBar_center_textColor, Color.RED); 
    mLeftBg = typedArray.getResourceId(R.styleable.TitleBar_titleBar_left_bg, R.mipmap.left_back); 
    mTitleRigthTextSize = typedArray.getDimension(R.styleable.TitleBar_titleBar_right_text_size, defualtSize); 
    mTitleRigthText = typedArray.getString(R.styleable.TitleBar_titleBar_right_text); 
    mTitleRigthColor = typedArray.getColor(R.styleable.TitleBar_titleBar_right_textColor, Color.RED); 
    typedArray.recycle(); 
    initView(); 
  } 
 
  private void initView() { 
    mTxtCenter = new TextView(getContext()); 
    mTxtCenter.setText(mTitleCenterText); 
    mTxtCenter.setTextSize(TypedValue.COMPLEX_UNIT_PX, mTitleCenterTextSize); 
    mTxtCenter.setTextColor(mTitleCenterTextColor); 
    LayoutParams centerParams = new LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT); 
    centerParams.addRule(RelativeLayout.CENTER_IN_PARENT, TRUE); 
    addView(mTxtCenter, centerParams); 
    mTxtRigth = new TextView(getContext()); 
    mTxtRigth.setText(mTitleRigthText); 
    mTxtRigth.setTextSize(TypedValue.COMPLEX_UNIT_PX, mTitleRigthTextSize); 
    mTxtRigth.setTextColor(mTitleRigthColor); 
    LayoutParams rigthParams = new LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT); 
    rigthParams.addRule(RelativeLayout.ALIGN_PARENT_RIGHT, TRUE); 
    rigthParams.addRule(RelativeLayout.CENTER_VERTICAL, TRUE); 
 
    addView(mTxtRigth, rigthParams); 
    mImgLeft = new ImageView(getContext()); 
    mImgLeft.setImageResource(mLeftBg); 
    LayoutParams leftParams = new LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT); 
    leftParams.setMargins(6, 0, 0, 0); 
    leftParams.addRule(RelativeLayout.CENTER_VERTICAL, TRUE); 
    addView(mImgLeft, leftParams); 
    View view = new View(getContext()); 
    view.setMinimumWidth(1); 
    view.setBackgroundColor(getResources().getColor(R.color.gray_767676)); 
    LayoutParams viewParams = new LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, 1); 
    viewParams.addRule(RelativeLayout.ALIGN_PARENT_BOTTOM); 
    addView(view, viewParams); 
    mImgLeft.setOnClickListener(new OnClickListener() { 
      @Override 
      public void onClick(View v) { 
        mItitleOnChangeLister.setLeftOnClickLister(); 
      } 
    }); 
 
    mTxtRigth.setOnClickListener(new OnClickListener() { 
      @Override 
      public void onClick(View v) { 
        mItitleOnChangeLister.setRigthOnClickLister(); 
      } 
    }); 
 
  } 
 
  public void setTitleBarChangerLiseter(ItitleOnChangeLister ititleOnChangeLister) { 
    this.mItitleOnChangeLister = ititleOnChangeLister; 
  } 
 
 
  public ImageView getLeftImage() { 
    return mImgLeft; 
  } 
 
  public TextView getTextViewCenter() { 
    return mTxtCenter; 
  } 
 
  public TextView getTextViewRigth() { 
    return mTxtRigth; 
  } 
} 

package com.xiong.demo1; 

public interface ItitleOnChangeLister { 
 
 
  void setLeftOnClickLister(); 
  void setRigthOnClickLister(); 
 
} 
								 
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