ANDROID_MARS学习笔记_S01原始版_018_SERVICE之Parcel

一、代码

1.xml
(1)activity_main.xml

 1 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
 2     xmlns:tools="http://schemas.android.com/tools"
 3     android:layout_width="match_parent"
 4     android:layout_height="match_parent"
 5     android:paddingBottom="@dimen/activity_vertical_margin"
 6     android:paddingLeft="@dimen/activity_horizontal_margin"
 7     android:paddingRight="@dimen/activity_horizontal_margin"
 8     android:paddingTop="@dimen/activity_vertical_margin"
 9     tools:context="com.parcel.MainActivity" >
10
11     <Button
12         android:id="@+id/saveDataBtn"
13         android:layout_width="wrap_content"
14         android:layout_height="wrap_content"
15         android:text="放数据" />
16     <Button
17         android:id="@+id/getDataBtn"
18         android:layout_width="wrap_content"
19         android:layout_height="wrap_content"
20         android:text="取数据"
21         android:layout_below="@id/saveDataBtn"/>
22
23 </RelativeLayout>

(2)AndroidManifest.xml

 1 <?xml version="1.0" encoding="utf-8"?>
 2 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
 3     package="com.parcel"
 4     android:versionCode="1"
 5     android:versionName="1.0" >
 6
 7     <uses-sdk
 8         android:minSdkVersion="8"
 9         android:targetSdkVersion="21" />
10
11     <application
12         android:allowBackup="true"
13         android:icon="@drawable/ic_launcher"
14         android:label="@string/app_name"
15         android:theme="@style/AppTheme" >
16         <activity
17             android:name=".MainActivity"
18             android:label="@string/app_name" >
19             <intent-filter>
20                 <action android:name="android.intent.action.MAIN" />
21
22                 <category android:name="android.intent.category.LAUNCHER" />
23             </intent-filter>
24         </activity>
25     </application>
26
27 </manifest>

2.java
(1)MainActivity.java

 1 package com.parcel;
 2
 3 import android.app.Activity;
 4 import android.os.Bundle;
 5 import android.os.Parcel;
 6 import android.view.View;
 7 import android.view.View.OnClickListener;
 8 import android.widget.Button;
 9
10 public class MainActivity extends Activity {
11
12     private Button getDataBtn,saveDataBtn;
13     private Parcel parcel = null;
14     @Override
15     protected void onCreate(Bundle savedInstanceState) {
16         super.onCreate(savedInstanceState);
17         setContentView(R.layout.activity_main);
18         parcel = Parcel.obtain();
19         saveDataBtn = (Button) findViewById(R.id.saveDataBtn);
20         getDataBtn = (Button) findViewById(R.id.getDataBtn);
21         saveDataBtn.setOnClickListener(new OnClickListener() {
22             @Override
23             public void onClick(View v) {
24                 parcel.writeString("testparcel");
25                 parcel.writeInt(666);
26                 parcel.writeFloat(0.999F);
27             }
28         });
29
30         getDataBtn.setOnClickListener(new OnClickListener() {
31             @Override
32             public void onClick(View v) {
33                 parcel.setDataPosition(0);//把指针移到最前面
34                 String str = parcel.readString();
35                 int i = parcel.readInt();
36                 float f= parcel.readFloat();
37                 System.out.println(str);
38                 System.out.println(i);
39                 System.out.println(f);
40             }
41         });
42     }
43 }