ANDROID_MARS学习笔记_S01原始版_018_SERVICE之Parcel

一、代码

1.xml
(1)activity_main.xml

 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     android:paddingBottom="@dimen/activity_vertical_margin"
     android:paddingLeft="@dimen/activity_horizontal_margin"
     android:paddingRight="@dimen/activity_horizontal_margin"
     android:paddingTop="@dimen/activity_vertical_margin"
     tools:context="com.parcel.MainActivity" >

     <Button
         android:id="@+id/saveDataBtn"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:text="放数据" />
     <Button
         android:id="@+id/getDataBtn"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:text="取数据"
         android:layout_below="@id/saveDataBtn"/>

 </RelativeLayout>

(2)AndroidManifest.xml

 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     package="com.parcel"
     android:versionCode="1"
     android:versionName="1.0" >

     <uses-sdk
         android:minSdkVersion="8"
         android:targetSdkVersion="21" />

     <application
         android:allowBackup="true"
         android:icon="@drawable/ic_launcher"
         android:label="@string/app_name"
         android:theme="@style/AppTheme" >
         <activity
             android:name=".MainActivity"
             android:label="@string/app_name" >
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />

                 <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
         </activity>
     </application>

 </manifest>

2.java
(1)MainActivity.java

 package com.parcel;

 import android.app.Activity;
 import android.os.Bundle;
 import android.os.Parcel;
 import android.view.View;
 import android.view.View.OnClickListener;
 import android.widget.Button;

 public class MainActivity extends Activity {

     private Button getDataBtn,saveDataBtn;
     private Parcel parcel = null;
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_main);
         parcel = Parcel.obtain();
         saveDataBtn = (Button) findViewById(R.id.saveDataBtn);
         getDataBtn = (Button) findViewById(R.id.getDataBtn);
         saveDataBtn.setOnClickListener(new OnClickListener() {
             @Override
             public void onClick(View v) {
                 parcel.writeString("testparcel");
                 parcel.writeInt(666);
                 parcel.writeFloat(0.999F);
             }
         });

         getDataBtn.setOnClickListener(new OnClickListener() {
             @Override
             public void onClick(View v) {
                 parcel.setDataPosition(0);//把指针移到最前面
                 String str = parcel.readString();
                 int i = parcel.readInt();
                 float f= parcel.readFloat();
                 System.out.println(str);
                 System.out.println(i);
                 System.out.println(f);
             }
         });
     }
 }