来源: 互联网  发布时间: 2014-02-18

jquery mobile的小TIPS集合1
  jquery mobile的确是个好东西，新推出的BEATA版，更能适应更多的浏览器了，下面是
小结下相关的TIPS，部分是收集的：


1） 显示和隐藏BACK这个默认按钮
    $(document).bind("mobileinit", function () {           $.mobile.page.prototype.options.addBackBtn = true;  
    });

2） 修改back button的文字
  $(document).bind("mobileinit", function () {$.mobile.page.prototype.options.backBtnText = "previous";});

3）在代码中动态隐藏dialog中的close按钮
  $('[data-role=dialog]div[id="YourDiaogdivID"]').live('pagecreate', function (event) {  
  $("a[data-icon='delete']").hide(); 
       });
4） 刷新一个checkbox
  $("select#foo").parent().contents().children('.ui-btn-text').text('Your Text Here');
5) 显示或隐藏日期器
  $(".ui-datepicker").hide();
$(".ui-datepicker").show();
6）

    

    来源: 互联网  发布时间: 2014-02-18

widget开发实例代码

其实创建一个widget很简单。这里就做了一个简单的demo,作为学习记录。

 

首先在AndroidManifest.xml中添加如下部分

一个widget其实就是一个receiver

 

<receiver android:name="WidgetProvider">
        	<intent-filter>
				<action android:name="android.appwidget.action.APPWIDGET_UPDATE" />
            </intent-filter>
            <intent-filter>
            	<action android:name="org.yangzc.widget.fresh"></action>
            </intent-filter>
        	<meta-data android:name="android.appwidget.provider" android:resource="@xml/appwidget_provider"></meta-data>
        </receiver>

 

 

WidgetProvider.java部分代码如下：

 

provider需要继承自AppWidgetProvider,这个例子是定时更新widget内容。

package org.yangzc.widget;

import java.util.Calendar;

import android.appwidget.AppWidgetManager;
import android.appwidget.AppWidgetProvider;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.util.Log;
import android.widget.RemoteViews;

public class WidgetProvider extends AppWidgetProvider {

	private String fresh = "org.yangzc.widget.fresh";
	private Context context;
	
	@Override
	public void onUpdate(Context context, AppWidgetManager appWidgetManager,int[] appWidgetIds) {
		Log.d("d","onUpdate");
//		super.onUpdate(context, appWidgetManager, appWidgetIds);
		this.context = context;
		for(int i=0; i<appWidgetIds.length; i++){
			int appWidgetId = appWidgetIds[i];
			RemoteViews views = new RemoteViews(context.getPackageName(), R.layout.main);
			views.setTextViewText(R.id.thread, i+":Sdfsdfsdf");
			appWidgetManager.updateAppWidget(appWidgetId, views);
		}
		
		RemoteViews views = new RemoteViews(context.getPackageName(), R.layout.main);
		views.setTextViewText(R.id.thread, ":Sdfsdfsdf");
		appWidgetManager.updateAppWidget(appWidgetIds[0], views);
		new MyThread().start();
	}

	@Override
	public void onReceive(Context context, Intent intent) {
		Log.d("d","onReceive");
		super.onReceive(context, intent);
		String action = intent.getAction();
		if(fresh.equals(action)){
			RemoteViews views = new RemoteViews(context.getPackageName(),R.layout.main);
			Calendar   cal=Calendar.getInstance();    
			System.out.println(cal.getTime().toLocaleString());  
			views.setTextViewText(R.id.thread, cal.getTime().toLocaleString());
			ComponentName thisWidget = new ComponentName(context,WidgetProvider.class);
			AppWidgetManager.getInstance(context).updateAppWidget(thisWidget, views);
		}
	}

	class MyThread extends Thread{
		public MyThread(){
		}

		@Override
		public void run() {
			while(true){
				try {
					Thread.sleep(1000);
				} catch (InterruptedException e) {
					e.printStackTrace();
				}
				Intent intent = new Intent(fresh);
				context.sendBroadcast(intent);
			}
		}
		
	}
}

 

 

main.xml

 

布局文件

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
	android:orientation="vertical" android:layout_width="wrap_content"
	android:layout_height="wrap_content">
	<TextView android:id="@+id/thread" android:layout_width="fill_parent"
		android:layout_height="wrap_content" android:text="@string/hello" />
</LinearLayout>

 

 

appwidget_provider.xml

 

<appwidget-provider xmlns:android="http://schemas.android.com/apk/res/android"
	android:minHeight="72px"  android:minWidth="72px"
	android:updatePeriodMillis="3800000" android:initialLayout="@layout/main">
</appwidget-provider>

 

 

 

    

    来源: 互联网  发布时间: 2014-02-18

SharedPreferences保存数据和在别的应用程序里面如何访问

package cn.itcast.preferences;

import android.app.Activity;
import android.content.Context;
import android.content.SharedPreferences;
import android.content.SharedPreferences.Editor;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

public class MainActivity extends Activity {
    private EditText nameText;
    private EditText ageText;
    
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        nameText = (EditText)findViewById(R.id.name);
		ageText = (EditText)findViewById(R.id.age);
        Button button = (Button)this.findViewById(R.id.button);
        button.setOnClickListener(new View.OnClickListener() {			
			@Override
			public void onClick(View v) {
				String name = nameText.getText().toString();
				String age = ageText.getText().toString();
				SharedPreferences preferences = getSharedPreferences("itcast", Context.MODE_WORLD_READABLE);
				Editor editor = preferences.edit();
				editor.putString("name", name);
				editor.putInt("age", new Integer(age));
				editor.commit();
				Toast.makeText(MainActivity.this, R.string.success, 1).show();
			}
		});
        
        Button resumebutton = (Button)this.findViewById(R.id.resume);
        resumebutton.setOnClickListener(new View.OnClickListener() {			
			@Override
			public void onClick(View v) {				
				SharedPreferences preferences = getSharedPreferences("itcast", Context.MODE_PRIVATE);
				String name = preferences.getString("name", "");
				int age = preferences.getInt("age", 20);
				nameText.setText(name);
				ageText.setText(String.valueOf(age));
			}
		});
    }
}

package cn.itcast.other;


import android.content.Context;
import android.content.SharedPreferences;
import android.test.AndroidTestCase;
import android.util.Log;

public class AccessOtherAppPreferenceTest extends AndroidTestCase {
	private static final String TAG = "AccessOtherAppPreferenceTest";
	
	public void testAccessOtherAppPreference() throws Throwable{
		//String path = "/data/data/cn.itcast.preferences/shared_prefs/itcast.xml";
		//File file = new File(path);
		// SAX来完成xml文件的解析，才能得到参数
		
		Context otherContext = getContext().createPackageContext("cn.itcast.preferences",
				Context.CONTEXT_IGNORE_SECURITY);
		SharedPreferences preferences = otherContext.getSharedPreferences("itcast", Context.MODE_PRIVATE);
		String name = preferences.getString("name", "");
		int age = preferences.getInt("age", 20);
		Log.i(TAG, "name="+ name + ",age="+ age);
	}

}