随笔分类 - android
android的知识
摘要:1. /TestTabWidget/res/layout/main.xml: 1 <?xml version="1.0" encoding="utf-8"?> 2 <TabHost xmlns:android="http://schemas.android.com/apk/res/android" 3 android:id="@android:id/tabhost" 4 android:layout_width="fill_parent" 5 android:layout_he
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摘要:1. DataBaseOpenHelp: 1 package com.vanceinfo.service; 2 3 import android.content.Context; 4 import android.database.sqlite.SQLiteDatabase; 5 import android.database.sqlite.SQLiteOpenHelper; 6 7 public class DataBaseOpenHelp extends SQLiteOpenHelper 8 { 9 10 private static final String SQLITE_N...
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摘要:SpinnerActivity: 1 import android.app.Activity; 2 import android.os.Bundle; 3 import android.view.View; 4 import android.widget.AdapterView; 5 import android.widget.AdapterView.OnItemSelectedListener; 6 import android.widget.ArrayAdapter; 7 import android.widget.Spinner; 8 import android.widget.Text
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摘要:1./TestSharedPreferences/res/layout/main.xml: 1 <?xml version="1.0" encoding="utf-8"?> 2 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 3 android:orientation="vertical" 4 android:layout_width="fill_parent" 5 android
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摘要:1./TestSeekBar/res/layout/main.xml: 1 <?xml version="1.0" encoding="utf-8"?> 2 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 3 android:orientation="vertical" 4 android:layout_width="fill_parent" 5 android:layout_he
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摘要:1. /TestScrollView/res/layout/main.xml: 1 <?xml version="1.0" encoding="utf-8"?> 2 <ScrollView xmlns:android="http://schemas.android.com/apk/res/android" 3 android:id="@+id/scrollview" android:layout_width="fill_parent" 4 android:layout_heig
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摘要:RadioGroupRadioButtonActivity: 1 package com.vanceinfo.RadioGroupRadioButton; 2 3 import android.app.Activity; 4 import android.os.Bundle; 5 import android.widget.RadioButton; 6 import android.widget.RadioGroup; 7 import android.widget.Toast; 8 import android.widget.RadioGroup.OnCheckedChangeListen.
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摘要:1./TestProgerssDialog/res/layout/main.xml: 1 <?xml version="1.0" encoding="utf-8"?> 2 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 3 android:orientation="vertical" 4 android:layout_width="fill_parent" 5 android:la
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摘要:1./TestProgressBar/res/layout/main.xml: 1 <?xml version="1.0" encoding="utf-8"?> 2 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 3 android:orientation="vertical" 4 android:layout_width="fill_parent" 5 android:layou
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摘要:1.通过在代码中写Menu的实现: 1 import android.app.Activity; 2 import android.content.Intent; 3 import android.os.Bundle; 4 import android.view.Menu; 5 import android.view.MenuItem; 6 7 public class MenuActivity extends Activity 8 { 9 @Override10 public void onCreate(Bundle savedInstanceState)11 {1...
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摘要:通过XML布局实现1 步骤:1.1 首先通过onCreateOptionsMenu()来创建菜单1.2 然后需要onOptionsItemSelected()对其能够触发的事件进行监听2 代码:2.1 在res文件夹中新建一个文件夹Menu,然后再Menu文件夹中新建menu.xml文件,通过onCreateOptionsMenu()方法来装载这个菜单布局文件,menu.xml文件的代码如下:1 <menu xmlns:android="http://schemas.android.com/apk/res/android">2 <item android:
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摘要:代码:ListViewActivity: 1 package com.vanceinfo.ListView; 2 3 import android.app.Activity; 4 import android.database.Cursor; 5 import android.graphics.Color; 6 import android.os.Bundle; 7 import android.provider.ContactsContract; 8 import android.provider.ContactsContract.PhoneLookup; 9 import android.
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摘要:1 import java.security.MessageDigest; 2 3 /** 4 * md5加密 <功能详细描述> 5 * 6 * @author wanglei 7 * @version [版本号, Feb 28, 2011] 8 * @see [相关类/方法] 9 * @since WihomeV100R001C02LGDM0510 */11 public class Md5Util12 {13 private static final String[] HEXDIGITS = {"0", "1", "2"
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摘要:1.TestImageViewActivity: 1 import android.app.Activity; 2 import android.os.Bundle; 3 import android.os.Handler; 4 import android.os.Message; 5 import android.widget.ImageView; 6 import android.widget.TextView; 7 8 public class TestImageViewActivity extends Activity 9 {10 private ImageView imag...
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摘要:1. ImagSwitcherActivity: 1 import android.app.Activity; 2 import android.os.Bundle; 3 import android.view.View; 4 import android.view.View.OnClickListener; 5 import android.widget.Button; 6 import android.widget.ImageSwitcher; 7 import android.widget.ImageView; 8 import android.widget.LinearLayout;
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摘要:1. 建立Http连接的步骤:1.1 获得一个http的连接地址(如:String httpurl = "http://192.168.0.68:8090/Test/index.jsp?par=this-is-get-Method-request!";)1.2 构造一个URL对象(如:url = new URL(httpurl);)1.3 使用HttpURLConnection打开一个连接(如:HttpURLConnection httpConnection = (HttpURLConnection) url.openConnection();)1.4 得到读取的内容(流)
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摘要:1./TestGridView/res/layout/main.xml: 1 <?xml version="1.0" encoding="utf-8"?> 2 <GridView xmlns:android="http://schemas.android.com/apk/res/android" 3 android:id="@+id/gridview" 4 android:layout_width="fill_parent" 5 android:layout_height=&q
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摘要:1. /TestGallery/res/layout/main.xml:1 <?xml version="1.0" encoding="utf-8"?>2 <Gallery xmlns:android="http://schemas.android.com/apk/res/android"3 android:id="@+id/Gallery01"4 android:layout_width="fill_parent"5 android:layout_height="w
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摘要:1. 代码:EditTextActivity: 1 package com.vanceinfo.EditText; 2 3 import android.app.Activity; 4 import android.os.Bundle; 5 import android.view.KeyEvent; 6 import android.view.View; 7 import android.view.View.OnKeyListener; 8 import android.widget.EditText; 9 import android.widget.TextView;10 11 publi.
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摘要:1. 讲解:1.1 setTitle():给对话框设置title1.2 setIcon():给对话框设置图标1.3 setMessage():设置对话框的提升消息1.4 setItems():设置对话框要显示的一个list,一般用于显示几个命令时1.5 setSingleChoiceItems():设置对话框显示一个单选的List1.6 setMultiChoiceItems():设置对话框显示一系列的复选框1.7 setPositiveButton()给对话框添加”Yes”按钮1.8 setNegtiveButton():给对话框添加”No”按钮2. DialogActivity: 1 im
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