https://blog.youkuaiyun.com/ytm419zh-cnhttps://blog.youkuaiyun.com/https://blog.youkuaiyun.com/ytm419/article/details/5940425https://blog.youkuaiyun.com/ytm419/article/details/5940425ytm419Thu, 14 Oct 2010 11:53:00 +0800BroadCastReceiver比较重要在系统框架中经常用到，主要有几个步骤
1．Sendbroadcast发送广播
发送广播时需要携带一个intent对象做为参数，intent生成时需要制定在系统中注册所用的唯一字符串,当然intent可以带一些需要传递的额外参数
public static final String  BOARDACTION_1 ="com.derek.xie.action1";
Intent intent = new Intent(]]>https://blog.youkuaiyun.com/ytm419/article/details/5940148https://blog.youkuaiyun.com/ytm419/article/details/5940148ytm419Thu, 14 Oct 2010 10:24:00 +0800SharedPreferences可以用来存储轻量级数据，其存储形式为xml文件方式，其系统自带xmlparser，对于类似于配置文件类的数据可以用Sharedpreferences存储非常方便，其写数据和读数据的方式分别为：
sp= this.getContext().getApplicationContext().getSharedPreferences("derek", 0);
      Editor e=sp.edit();
      e.putStri]]>https://blog.youkuaiyun.com/ytm419/article/details/5938443https://blog.youkuaiyun.com/ytm419/article/details/5938443ytm419Wed, 13 Oct 2010 15:15:00 +0800https://blog.youkuaiyun.com/ytm419/article/details/5938227https://blog.youkuaiyun.com/ytm419/article/details/5938227ytm419Wed, 13 Oct 2010 13:56:00 +0800publicfinal String  DB_NAME= "derekTest.db";
      publicfinal String  TABLE_NAME= "table1";
      private  final String TABLE_ID="_id";
      publicfinal String  TITLE= "title";
      publicfinal String  BODY= "body";
class ]]>https://blog.youkuaiyun.com/ytm419/article/details/5935783https://blog.youkuaiyun.com/ytm419/article/details/5935783ytm419Tue, 12 Oct 2010 15:05:00 +08001．创建数据库要用到一个类SQLiteOpenHelper，它是一个抽象类可以创一个类继承他
class DBHelper extendsSQLiteOpenHelper
{
 
      public DBHelper(Context context, String name, CursorFactory factory,int version) {
            super(context, name, factory, vers]]>https://blog.youkuaiyun.com/ytm419/article/details/5933392https://blog.youkuaiyun.com/ytm419/article/details/5933392ytm419Mon, 11 Oct 2010 14:34:00 +0800SeekBar 搜索进度条：

Max指定总长度，progress指定初始默认长度，thumb指定进度条上指示长度的图片https://blog.youkuaiyun.com/ytm419/article/details/5927375https://blog.youkuaiyun.com/ytm419/article/details/5927375ytm419Fri, 08 Oct 2010 15:16:00 +0800Toast就是一个弹出提示框，最简单的用法如果只需要弹出个文字的话，就是调用Toast的makeText方法设置提示文本和显示时间，然后show显示
Toast.makeText(getApplicationContext(), "Text toast test!", Toast.LENGTH_LONG).show();
另外Toast也可以指定view来完成布局，使得可以添加icon图标和文本等
方法如下：
public void ToastOccur(]]>https://blog.youkuaiyun.com/ytm419/article/details/5927075https://blog.youkuaiyun.com/ytm419/article/details/5927075ytm419Fri, 08 Oct 2010 13:50:00 +0800https://blog.youkuaiyun.com/ytm419/article/details/5925360https://blog.youkuaiyun.com/ytm419/article/details/5925360ytm419Thu, 07 Oct 2010 16:02:00 +0800CursorAdapter是个抽象类,一般用他的直接子类simplecursorAdapter，废话少说上代码：
ListView lv = (ListView)this.findViewById(R.id.listview);
      Cursor cur = this.getContentResolver().query(Contacts.People.CONTENT_URI, null, null, null, null);
     Log.v("111]]>https://blog.youkuaiyun.com/ytm419/article/details/5925202https://blog.youkuaiyun.com/ytm419/article/details/5925202ytm419Thu, 07 Oct 2010 14:51:00 +0800利用simpleAdapter关联ListView时由于参数较多显得较为复杂，代码如下：
setContentView(R.layout.main);
      ListView lv = (ListView)this.findViewById(R.id.listview);//第一步
////第二步生成simpleAdapter     
ArrayList> al = new ArrayListhttps://blog.youkuaiyun.com/ytm419/article/details/5925122https://blog.youkuaiyun.com/ytm419/article/details/5925122ytm419Thu, 07 Oct 2010 14:03:00 +0800ListView组件一般用做List菜单，非常常用，其使用需分几步
1.  生成或获得ListView组件对象
2.  生成BaseAdapter或其子类对象（常用ArrayAdapter,SimpleAdapter.CursorAdapter）
3.  通过setAdapter()方法关联listView和Adapter
例1,通过ArrayAdapter来生成ListView对象
String[] itemvalue ={"item1","i]]>https://blog.youkuaiyun.com/ytm419/article/details/5924902https://blog.youkuaiyun.com/ytm419/article/details/5924902ytm419Thu, 07 Oct 2010 11:02:00 +0800界面布局同样也可以完全手动动态实现而不借助于xml布局文件，但两种方式不可混用，实现方式如下（以linearlayout为例）：
1．在xml文件里面定义的linearlayout等标签可以通过new LinearLayout()的方式来创建，LinearLayout类中有个内部类LayoutParams可以用来设置linearLayout的相关参数
LinearLayout.LayoutParams rlp= newLinearLayout.LayoutParams(Lay]]>https://blog.youkuaiyun.com/ytm419/article/details/5922413https://blog.youkuaiyun.com/ytm419/article/details/5922413ytm419Tue, 05 Oct 2010 13:53:00 +0800FrameLayout:不能设计这个控件的位置，控件会放到左上角开始叠加

下为布局代码

    android:orientation="vertical"
    android:layout_width="fill_p]]>https://blog.youkuaiyun.com/ytm419/article/details/5922364https://blog.youkuaiyun.com/ytm419/article/details/5922364ytm419Tue, 05 Oct 2010 12:31:00 +0800https://blog.youkuaiyun.com/ytm419/article/details/5922309https://blog.youkuaiyun.com/ytm419/article/details/5922309ytm419Tue, 05 Oct 2010 11:19:00 +0800https://blog.youkuaiyun.com/ytm419/article/details/5920983https://blog.youkuaiyun.com/ytm419/article/details/5920983ytm419Mon, 04 Oct 2010 12:24:00 +0800看着代码来说几个小知识点：
1）findViewById是通过R中自动生成的资源id号来生成对象，当然android中也可以通过new Button()这种方式来生成（tips里面补充一段代码一看即明白）
2）onClickListener点击事件监听可以通过一个类来实现此接口然后在类中实现onClick方法，也可以通过匿名内部类来实现此接口处理点击事件，例中button1和button2分别进行了实现
public class UIDemo extends Act]]>https://blog.youkuaiyun.com/ytm419/article/details/5920904https://blog.youkuaiyun.com/ytm419/article/details/5920904ytm419Mon, 04 Oct 2010 11:34:00 +0800    android:layout_width="fill_pare]]>