Android officially recommends transferring data to Global Objects

Although static variables can be used to transmit any type of data, it is not officially recommended. If a large number of static variables (especially those that occupy resources, such as bitmap objects) are used in the class, memory overflow may occur, it is also possible that the code is difficult to maintain and confuse due to the appearance of static variables in many classes. Therefore, global objects can be used for transmission. This method can completely replace static variables.

Global object scope in Android: unless the android program is completely cleared out of memory, the global object will be accessible all the time.

1. First create a global class:

package cn.jiabin.demo.view;import android.app.Application;public class MyApplication extends Application {public String name;public int age;}

2. Configure the global class to the androidmanifest. xml file:

<?xml version="1.0" encoding="utf-8"?><manifest xmlns:android="http://schemas.android.com/apk/res/android"    package="cn.jiabin.demo.view"    android:versionCode="1"    android:versionName="1.0" >    <uses-sdk android:minSdkVersion="8" />    <application        android:icon="@drawable/ic_launcher"        android:label="@string/app_name"        android:name=".MyApplication" >        <activity            android:label="@string/app_name"            android:name=".MyDemoActivity" >            <intent-filter >                <action android:name="android.intent.action.MAIN" />                <category android:name="android.intent.category.LAUNCHER" />            </intent-filter>        </activity>        <activity android:name=".A" />    </application></manifest>

3. Use it in a normal class:

Myapplication MyApp = (myapplication) getapplication (); MyApp. Name = "James"; MyApp. Age = 23;

It is recommended that data be transmitted in this way.

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