设置一个自定义的ActionBar。
1 在values文件夹下新建attrs.xml,写上我们自定义的Actionbar的一些属性。使用“declare-styleable”表示我们自定义的属性,其中button的背景属性格式为reference|color,表示背景既可以设置16进制的颜色代码也可以设置为资源文件。

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <declare-styleable name="MyActionBar">
       <attr name="title" format="string"/> 
       <attr name="titleTextSize" format="dimension"/>
       <attr name="titleTextColor" format="color"/>  

       <attr name="leftTextColor" format="color"/> 
       <attr name="leftText" format="string"/>
       <attr name="leftBackground" format="reference|color"/>

       <attr name="rightTextColor" format="color"/> 
       <attr name="rightText" format="string"/>
       <attr name="rightBackground" format="reference|color"/>

       <attr name="actionbarBackground" format="reference|color"/>
    </declare-styleable>
</resources>

2 新建MyActionBar.java继承自RelativeLayout,

package com.example.myactionbar;


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.View;
import android.widget.Button;
import android.widget.RelativeLayout;
import android.widget.TextView;

public class MyActionBar extends RelativeLayout {
    //声明我们需要的控件,这些控件是和attrs.xml中我们定义的属性对应的
    private Button leftButton, rightButton;
    private TextView tvTitle;//actionbar控件上显示的标题

    private int leftTextColor;
    private Drawable leftBackground;
    private String leftText;

    private int rightTextColor;
    private Drawable rightBackground;
    private String rightText;

    private String title;
    private int titleTextColor;//显示文字的颜色
    private float titleTextSize;//显示出来的文字的大小

    private Drawable actionBarBackground;

    private LayoutParams leftParams, rightParams, titleParams;//设置控件的布局 
    public MyActionBar(Context context, AttributeSet attrs) {
        super(context, attrs);
        // TODO Auto-generated constructor stub
        //使用TypedArray,获取在attrs.xml中我们自定义的一系列属性,并将属性赋给我们定义的控件,然后我们便可以从TypedArray中获取到这些属性值
        TypedArray typedArray = context.obtainStyledAttributes(attrs, R.styleable.MyActionBar);
        leftTextColor = typedArray.getColor(R.styleable.MyActionBar_leftTextColor, 0);
        leftBackground = typedArray.getDrawable(R.styleable.MyActionBar_leftBackground);
        leftText = typedArray.getString(R.styleable.MyActionBar_leftText);

        rightTextColor = typedArray.getColor(R.styleable.MyActionBar_rightTextColor, 0);
        rightBackground = typedArray.getDrawable(R.styleable.MyActionBar_rightBackground);
        rightText = typedArray.getString(R.styleable.MyActionBar_rightText);

        title = typedArray.getString(R.styleable.MyActionBar_title);
        titleTextColor = typedArray.getColor(R.styleable.MyActionBar_titleTextColor, 0);
        titleTextSize = typedArray.getDimension(R.styleable.MyActionBar_titleTextSize, 0);

        actionBarBackground = typedArray.getDrawable(R.styleable.MyActionBar_actionbarBackground);
        typedArray.recycle();//回收此变量,节约资源,避免由于缓存导致的其他问题
        // 实例化我们定义的控件
        leftButton = new Button(context);
        rightButton = new Button(context);
        tvTitle = new TextView(context);
        // 将我们获取到的属性分别赋给相应的控件
        leftButton.setTextColor(leftTextColor);
        leftButton.setBackground(leftBackground);
        leftButton.setText(leftText);
        rightButton.setTextColor(rightTextColor);
        rightButton.setBackground(rightBackground);
        rightButton.setText(rightText);
        tvTitle.setText(title);
        tvTitle.setTextColor(titleTextColor);
        tvTitle.setTextSize(titleTextSize);
        tvTitle.setGravity(Gravity.CENTER);//设置标题居中

        setBackground(actionBarBackground);//设置viewGroup(即两个button和一个tittle)的背景颜色
        //以上我们已经设置好了各个控件的属性,那接下来就需要把这些控件放置到viewGroup中了,即我们需要设置一下他们的布局属性了
        leftParams = new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);//设置左Button的width和height
        leftParams.addRule(RelativeLayout.ALIGN_PARENT_LEFT, TRUE);//设置左边button的布局属性,即左对齐
        addView(leftButton, leftParams);//将左边button加入到viewGroup中
        rightParams = new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
        rightParams.addRule(RelativeLayout.ALIGN_PARENT_RIGHT, TRUE);
        addView(rightButton, rightParams);
        titleParams = new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
        titleParams.addRule(RelativeLayout.CENTER_IN_PARENT, TRUE);
        addView(tvTitle, titleParams);              
    }   

}

3 引用我们上述自定义的actionbar控件
引用第三方的命名空间,即我们自定义的命名空间,在eclipse中,要加上完整的包名,xmlns:custom=”http://schemas.android.com/apk/res/com.example.myactionbar”,其中这个包名必须和manifest中声明的包名一致,否则会报错:No resource identifier found for attribute x in package x。但是在Android Studio中直接写xmlns:custom=”http://schemas.android.com/apk/res-auto”即可,其中custom是我们自定义的命名空间的名字。activity_main.xml如下:

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"   
    xmlns:custom="http://schemas.android.com/apk/res/com.example.myactionbar"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="com.example.myactionbar.MainActivity" >

    <!-- 引用我们自定义的actionbar,要添加上完整的包名,下面以custom开头的就是我们自定义的属性-->
    <com.example.myactionbar.MyActionBar 
        android:id="@+id/actionbar"
        android:layout_width="match_parent"
        android:layout_height="40dp"
        custom:title="我的标题"
        custom:titleTextSize="6sp"
        custom:titleTextColor="#123412"
        custom:leftTextColor="#123412"
        custom:leftText="返回"
         custom:rightTextColor="#123412"
        custom:rightText="更多"
        custom:actionbarBackground="@drawable/title_bar"
        >

    </com.example.myactionbar.MyActionBar>

</RelativeLayout>

4 给我们设置的两个button添加点击事件
编辑MyActionBar.java

package com.example.myactionbar;


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.View;
import android.widget.Button;
import android.widget.RelativeLayout;
import android.widget.TextView;

public class MyActionBar extends RelativeLayout {
    //声明我们需要的控件,这些控件是和attrs.xml中我们定义的属性对应的
    private Button leftButton, rightButton;
    private TextView tvTitle;//actionbar控件上显示的标题

    private int leftTextColor;
    private Drawable leftBackground;
    private String leftText;

    private int rightTextColor;
    private Drawable rightBackground;
    private String rightText;

    private String title;
    private int titleTextColor;//显示文字的颜色
    private float titleTextSize;//显示出来的文字的大小

    private Drawable actionBarBackground;

    private LayoutParams leftParams, rightParams, titleParams;//设置控件的布局
    private MyActionbarClickListener listener;//定义接口对象

    public interface MyActionbarClickListener//自定义接口
    {
        void leftClick();
        void rightClick();
    }   
    public void setOnMyActionbarClickListener(MyActionbarClickListener listener)//暴露给调用者的方法,这样调用者便可以将具体实现以匿名内部类的
    //形式传递进来
    {
        this.listener = listener;
    }

    public MyActionBar(Context context, AttributeSet attrs) {
        super(context, attrs);
        // TODO Auto-generated constructor stub
        //使用TypedArray,获取在attrs.xml中我们自定义的一系列属性,并将属性赋给我们定义的控件,然后我们便可以从TypedArray中获取到这些属性值
        TypedArray typedArray = context.obtainStyledAttributes(attrs, R.styleable.MyActionBar);
        leftTextColor = typedArray.getColor(R.styleable.MyActionBar_leftTextColor, 0);
        leftBackground = typedArray.getDrawable(R.styleable.MyActionBar_leftBackground);
        leftText = typedArray.getString(R.styleable.MyActionBar_leftText);

        rightTextColor = typedArray.getColor(R.styleable.MyActionBar_rightTextColor, 0);
        rightBackground = typedArray.getDrawable(R.styleable.MyActionBar_rightBackground);
        rightText = typedArray.getString(R.styleable.MyActionBar_rightText);

        title = typedArray.getString(R.styleable.MyActionBar_title);
        titleTextColor = typedArray.getColor(R.styleable.MyActionBar_titleTextColor, 0);
        titleTextSize = typedArray.getDimension(R.styleable.MyActionBar_titleTextSize, 0);

        actionBarBackground = typedArray.getDrawable(R.styleable.MyActionBar_actionbarBackground);
        typedArray.recycle();//回收此变量,节约资源,避免由于缓存导致的其他问题
        // 实例化我们定义的控件
        leftButton = new Button(context);
        rightButton = new Button(context);
        tvTitle = new TextView(context);
        // 将我们获取到的属性分别赋给相应的控件
        leftButton.setTextColor(leftTextColor);
        leftButton.setBackground(leftBackground);
        leftButton.setText(leftText);
        rightButton.setTextColor(rightTextColor);
        rightButton.setBackground(rightBackground);
        rightButton.setText(rightText);
        tvTitle.setText(title);
        tvTitle.setTextColor(titleTextColor);
        tvTitle.setTextSize(titleTextSize);
        tvTitle.setGravity(Gravity.CENTER);//设置标题居中

        setBackground(actionBarBackground);//设置viewGroup(即两个button和一个tittle)的背景颜色
        //以上我们已经设置好了各个控件的属性,那接下来就需要把这些控件放置到viewGroup中了,即我们需要设置一下他们的布局属性了
        leftParams = new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);//设置左Button的width和height
        leftParams.addRule(RelativeLayout.ALIGN_PARENT_LEFT, TRUE);//设置左边button的布局属性,即左对齐
        addView(leftButton, leftParams);//将左边button加入到viewGroup中
        rightParams = new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
        rightParams.addRule(RelativeLayout.ALIGN_PARENT_RIGHT, TRUE);
        addView(rightButton, rightParams);
        titleParams = new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.MATCH_PARENT);
        titleParams.addRule(RelativeLayout.CENTER_IN_PARENT, TRUE);
        addView(tvTitle, titleParams);

        leftButton.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub
                listener.leftClick();
            }
        });
        rightButton.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub
                listener.rightClick();
            }
        });
    }
    public void setLeftIsVisible(boolean flag)//设置左button是否显示
    {
        if (flag) {
            leftButton.setVisibility(VISIBLE);
        }else {
            leftButton.setVisibility(GONE);
        }
    }

}

5 在MainActivity中引用我们自定义的控件及其点击事件

package com.example.myactionbar;

import com.example.myactionbar.MyActionBar.MyActionbarClickListener;

import android.app.Activity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.Toast;

public class MainActivity extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        MyActionBar actionBar = (MyActionBar)findViewById(R.id.actionbar);
        actionBar.setOnMyActionbarClickListener(new MyActionbarClickListener() {

            public void leftClick() {
                // TODO Auto-generated method stub
                Toast.makeText(MainActivity.this, "left button", Toast.LENGTH_SHORT).show();
            }

            public void rightClick() {
                // TODO Auto-generated method stub
                Toast.makeText(MainActivity.this, "right button", Toast.LENGTH_SHORT).show();
            }                       
        });
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();
        if (id == R.id.action_settings) {
            return true;
        }
        return super.onOptionsItemSelected(item);
    }
}

6 eclipse工程布局和最终效果如下:

activity android 模板 android ui模板_android


activity android 模板 android ui模板_控件_02


activity android 模板 android ui模板_activity android 模板_03