欢迎您访问程序员文章站本站旨在为大家提供分享程序员计算机编程知识!
您现在的位置是: 首页  >  移动技术

android自定义组件实现方法

程序员文章站 2023-11-18 11:47:16
本文实例讲述了android自定义组件实现方法。分享给大家供大家参考。具体如下: atts.xml:

本文实例讲述了android自定义组件实现方法。分享给大家供大家参考。具体如下:

atts.xml:

<?xml version="1.0" encoding="utf-8"?>
<resources>
  <declare-styleable name="topbar">
    <attr name="titletext" format="string"/>
    <attr name="titletextsize" format="dimension"/>
    <attr name="titletextcolor" format="color"/>
    <attr name="lefttext" format="string"/>
    <attr name="leftbackground" format="reference|color"/>
    <attr name="lefttextcolor" format="color"/>
    <attr name="righttext" format="string"/>
    <attr name="rightbackground" format="reference|color"/>
    <attr name="righttextcolor" format="color"/>
  </declare-styleable>
</resources>

topbar.java:

package com.cd.administrator.mytopbar;
import android.annotation.targetapi;
import android.content.context;
import android.content.res.typedarray;
import android.graphics.drawable.drawable;
import android.os.build;
import android.util.attributeset;
import android.view.gravity;
import android.view.view;
import android.view.viewgroup;
import android.widget.button;
import android.widget.relativelayout;
import android.widget.textview;
import android.widget.toast;
/**
 * created by administrator on 2015/1/8.
 */
public class topbar extends relativelayout{
  private button leftbutton,rightbutton;
  private textview tvtitle;
  private int lefttextcolor;
  private drawable leftbackground;
  private string lefttext;
  private int righttextcolor;
  private drawable rightbackground;
  private string righttext;
  private int titletextcolor;
  private string titletext;
  private float titletextsize;
  private layoutparams leftparams,rightparams,titleparams;
  private topbarclicklistener listener;
  public interface topbarclicklistener{
    public void leftclick();
    public void rightclick();
  }
  public void setontopbarclicklistener(topbarclicklistener listener){
    this.listener = listener;
  }
  @targetapi(build.version_codes.jelly_bean)
  public topbar(final context context, attributeset attrs) {
    super(context, attrs);
    typedarray ta = context.obtainstyledattributes(attrs,r.styleable.topbar);
    lefttextcolor = ta.getcolor(r.styleable.topbar_lefttextcolor,0);
    leftbackground = ta.getdrawable(r.styleable.topbar_leftbackground);
    lefttext = ta.getstring(r.styleable.topbar_lefttext);
    righttextcolor = ta.getcolor(r.styleable.topbar_righttextcolor,0);
    rightbackground = ta.getdrawable(r.styleable.topbar_rightbackground);
    righttext = ta.getstring(r.styleable.topbar_righttext);
    titletextcolor = ta.getcolor(r.styleable.topbar_titletextcolor,0);
    titletextsize = ta.getdimension(r.styleable.topbar_titletextsize,0);
    titletext = ta.getstring(r.styleable.topbar_titletext);
    ta.recycle();
    leftbutton = new button(context);
    rightbutton = new button(context);
    tvtitle = new textview(context);
    leftbutton.settextcolor(lefttextcolor);
    leftbutton.setbackground(leftbackground);
    leftbutton.settext(lefttext);
    rightbutton.settextcolor(righttextcolor);
    rightbutton.setbackground(rightbackground);
    rightbutton.settext(righttext);
    tvtitle.settextcolor(titletextcolor);
    tvtitle.settextsize(titletextsize);
    tvtitle.settext(titletext);
    tvtitle.setgravity(gravity.center);
    setbackgroundcolor(0xf59563);
    leftparams = new layoutparams(viewgroup.layoutparams.wrap_content, viewgroup.layoutparams.wrap_content);
    leftparams.addrule(relativelayout.align_parent_left,true);
    addview(leftbutton,leftparams);
    rightparams = new layoutparams(viewgroup.layoutparams.wrap_content, viewgroup.layoutparams.wrap_content);
    rightparams.addrule(relativelayout.align_parent_right,true);
    addview(rightbutton,rightparams);
    titleparams = new layoutparams(viewgroup.layoutparams.wrap_content, viewgroup.layoutparams.match_parent);
    titleparams.addrule(relativelayout.center_in_parent,true);
    addview(tvtitle,titleparams);
    leftbutton.setonclicklistener(new onclicklistener() {
      @override
      public void onclick(view v) {
        listener.leftclick();
      }
    });
    rightbutton.setonclicklistener(new onclicklistener() {
      @override
      public void onclick(view v) {
        listener.rightclick();
      }
    });
  }
}

activity_main.xml:

<relativelayout xmlns:android="http://schemas.android.com/apk/res/android"
  xmlns:custom="http://schemas.android.com/apk/res-auto"
  xmlns:tools="http://schemas.android.com/tools"
  android:layout_width="match_parent"
  android:layout_height="match_parent"
  android:paddingleft="@dimen/activity_horizontal_margin"
  android:paddingright="@dimen/activity_horizontal_margin"
  android:paddingtop="@dimen/activity_vertical_margin"
  android:paddingbottom="@dimen/activity_vertical_margin" tools:context=".mainactivity">
  <com.cd.administrator.mytopbar.topbar
    android:id="@+id/topbar"
    android:layout_width="match_parent"
    android:layout_height="40dp"
    custom:leftbackground="@drawable/blue"
    custom:lefttext="back"
    custom:lefttextcolor="#ffffff"
    custom:rightbackground="@drawable/blue"
    custom:righttext="more"
    custom:righttextcolor="#ffffff"
    custom:titletextcolor="#121212"
    custom:titletextsize="15sp"
    custom:titletext="自定义标题">
  </com.cd.administrator.mytopbar.topbar>
</relativelayout>

mainactivity.java:

package com.cd.administrator.mytopbar;
import android.support.v7.app.actionbaractivity;
import android.os.bundle;
import android.view.menu;
import android.view.menuitem;
import android.widget.toast;
public class mainactivity extends actionbaractivity {
  @override
  protected void oncreate(bundle savedinstancestate) {
    super.oncreate(savedinstancestate);
    setcontentview(r.layout.activity_main);
    topbar topbar = (topbar) findviewbyid(r.id.topbar);
    topbar.setontopbarclicklistener(new topbar.topbarclicklistener() {
      @override
      public void leftclick() {
        toast.maketext(mainactivity.this, "cd--left", toast.length_short).show();
      }
      @override
      public void rightclick() {
        toast.maketext(mainactivity.this,"cd--right",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.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();
    //noinspection simplifiableifstatement
    if (id == r.id.action_settings) {
      return true;
    }
    return super.onoptionsitemselected(item);
  }
}

希望本文所述对大家的android程序设计有所帮助。