Android剪贴板用法详解

本文实例详述了android剪贴板的用法，分享给大家供大家参考。具体方法分析如下：

这里首先需要注意的一点，就是在使用android剪贴板的时候大家只记住一点就行了，不管是安卓设备还是pc机，复制粘贴在同一时间里只能用于一个对象上，整通俗点就是：pc机上，不可能同时从c盘复制，又从d盘复制就行了，具体的看代码，很简单，直接上代码：
 

package com.xiaoma.clipboard.demo;
 
 import android.app.activity;
 import android.content.clipdata;
 import android.content.clipdata.item;
 import android.content.clipdescription;
 import android.content.clipboardmanager;
 import android.content.contentresolver;
 import android.content.intent;
 import android.database.cursor;
 import android.net.uri;
 import android.os.bundle;
 import android.view.view;
 import android.view.view.onclicklistener;
 import android.widget.button;
 import android.widget.toast;
 
 /** 
 * @title: clipboarddemoactivity.java
 * @package com.xiaoma.clipboard.demo
 * @description: 剪贴板学习
 * @author mzh
 */
 public class clipboarddemoactivity extends activity implements onclicklistener{
    
     private button put = null;
     private button get = null;
     private clipboardmanager clipboard = null;
     private static final string contacts = "content://com.example.contacts";
     private string copy_path = "/copy";
     public static final string mime_type_contact = "vnd.android.cursor.item/vnd.xiaoma.contact";
     @override
     public void oncreate(bundle savedinstancestate) {
         super.oncreate(savedinstancestate);
         setcontentview(r.layout.main);
         init();
     }
    
     /**
      * 初始化方法实现
      */
     private void init(){
         put = (button)findviewbyid(r.id.button1);
         put.setonclicklistener(this);
        
         get = (button)findviewbyid(r.id.button2);
         get.setonclicklistener(this);
     }
    
     /**
      * 监听实现
      */
     @override
     public void onclick(view v) {
         switch (v.getid()) {
         case r.id.button1:
             put();
             break;
         case r.id.button2:
             get();
             break;
         default:
             break;
         }
     }
    
     /**
      * 往clip中放入数据
      */
     private void put(){
        
         /**
          * 往clipboardmanager中可放的数据类型有三种:
          * 因为大家都知道,就算是电脑,ctrl+c也不可能在同一时间里即
          * 从c盘剪贴,又从d般剪贴,所以小马只写一种简单的信息进去,
          * 另外两种写在注释中
        
         //类型一:text
         clipboard = (clipboardmanager)getsystemservice(clipboard_service);
         clipdata textcd = clipdata.newplaintext("kkk", "wahouhou!clip....");
         clipboard.setprimaryclip(textcd);
          */
         /**
          *
         //类型二:uri
         uri copyuri = uri.parse(contacts + copy_path + "/" + "xiaoma");
         clipdata clipuri = clipdata.newuri(getcontentresolver(),"uri",copyuri);
         clipboard.setprimaryclip(clipuri);
         *
         */
         //类型三:intent
         //试下在intent剪贴时使用bundle传值进去
         clipboard = (clipboardmanager)getsystemservice(clipboard_service);
         intent appintent = new intent();
         bundle bundle = new bundle();
         bundle.putint("xiaoma", 3344258);
         bundle.putint("yatou", 3344179);
         appintent.putextra("xiaomaguo", bundle);
         appintent.setclass(clipboarddemoactivity.this, receiverclip.class);
         clipdata clipintent = clipdata.newintent("intent",appintent);
         clipboard.setprimaryclip(clipintent);
     }
    
     /**
      * 从clip中取数据
      */
     private void get(){
         clipboard = (clipboardmanager)getsystemservice(clipboard_service);
         item item = null;
        
         //无数据时直接返回
         if(!clipboard.hasprimaryclip()){
             toast.maketext(getapplicationcontext(), "剪贴板中无数据", toast.length_short).show();
             return ;
         }
        
         //如果是文本信息
         if (clipboard.getprimaryclipdescription().hasmimetype(
                 clipdescription.mimetype_text_plain)) {
             clipdata cdtext = clipboard.getprimaryclip();
             item = cdtext.getitemat(0);
             //此处是text文本信息
             if(item.gettext() == null){
                 toast.maketext(getapplicationcontext(), "剪贴板中无内容", toast.length_short).show();
                 return ;
             }else{
                 toast.maketext(getapplicationcontext(), item.gettext(), toast.length_short).show();
             }
 
         //如果是intent
         } else if (clipboard.getprimaryclipdescription().hasmimetype(
                 clipdescription.mimetype_text_intent)) {
             //此处是intent
             item = clipboard.getprimaryclip().getitemat(0);
             intent intent = item.getintent();
             startactivity(intent);
             //........
        
         //如果是uri
         } else if (clipboard.getprimaryclipdescription().hasmimetype(
                 clipdescription.mimetype_text_urilist)) {
             //此处是uri内容             contentresolver cr = getcontentresolver();
             clipdata cduri = clipboard.getprimaryclip();
             item = cduri.getitemat(0);
             uri uri = item.geturi();
             if(uri != null){
                 string mimetype = cr.gettype(uri);
                 if (mimetype != null) {
                     if (mimetype.equals(mime_type_contact)) {
                         cursor pastecursor = cr.query(uri, null, null, null, null);
                         if (pastecursor != null) {
                             if (pastecursor.movetofirst()) {
                                  //此处对数据进行操作就可以了,前提是有权限
                             }
                         }
                         pastecursor.close();
                      }
                  }
             }
         }
     }
 }

下面是用来接收intent传递的值，临时的一个activity，代码更简单：
 

package com.xiaoma.clipboard.demo;
 
 import android.app.activity;
 import android.content.intent;
 import android.os.bundle;
 import android.view.textureview;
 import android.widget.textview;
 
 /**
  * @title: receiverclip.java
  * @package com.xiaoma.clipboard.demo
  * @description:临时用来接收下从clip传过来的intent值
  * @author mzh
  */
 public class receiverclip extends activity {
    
     private textview tv1 ;
     private textview tv2 ;
    
     @override
     protected void oncreate(bundle savedinstancestate) {
         // todo auto-generated method stub
         super.oncreate(savedinstancestate);
         setcontentview(r.layout.main2);
         init();
     }
    
     private void init(){
        
         tv1 = (textview)findviewbyid(r.id.xiaoma);
         tv2 = (textview)findviewbyid(r.id.yatou);
        
         intent intent = getintent();
         bundle b =intent.getbundleextra("xiaomaguo");
         if(b != null){
             int xiaoma = b.getint("xiaoma");
             int yatou = b.getint("yatou");
             if(!"".equals(string.valueof(xiaoma)) && !"".equals(string.valueof(yatou))){
                 tv1.settext(string.valueof(xiaoma));
                 tv2.settext(string.valueof(yatou));
             }
         }
     }
 }

全局配置文件里面没什么，如下：
 

<?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android=""
     package="com.xiaoma.clipboard.demo"
     android:versioncode="1"
     android:versionname="1.0" >
 
     <uses-sdk android:minsdkversion="14" />
 
     <application
         android:icon="@drawable/guoguo"
         android:label="@string/app_name" >
         <activity
             android:name=".clipboarddemoactivity"
             android:label="@string/app_name" >
             <intent-filter>
                 <action android:name="android.intent.action.main" />
 
                 <category android:name="android.intent.category.launcher" />
             </intent-filter>
         </activity>
         <activity android:name=".receiverclip"></activity>
     </application>
 
 </manifest>

希望本文所述对大家的android程序设计有所帮助。