首先运行application的name相应的类或做activity中间name相应的类?

it2025-07-18  9

今天找到该程序条目中找到以下两个条件name我写了一个测试程序,一般如以下:

看mainfest.xml

<application

        android:allowBackup="true"         android:icon="@drawable/ic_launcher"         android:name="com.example.test1.app"         android:label="@string/app_name"         android:theme="@style/AppTheme" >         <activity             android:name="com.example.test1.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>

k看app

package com.example.test1; import android.app.Application; import android.os.Bundle; import android.util.Log; public class app extends Application{public void onCreate(){super.onCreate();Log.d("tt","application");} }

看activity例如以下

public class MainActivity extends Activity {@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);           Log.d("tt","activity");           new app();}

最后我们来看日志文件就清楚了:

10-28 15:40:54.915: D/tt(4116): application

10-28 15:40:55.525: D/tt(4116): activity

这里就是说application 的name相应了类是在程序安装时候就创建了

然后我第二次打开例如以下:

仅仅有一个信息

android.app.Application Base class for those who need to maintain global application state. You can provide your own implementation by specifying its name in your AndroidManifest.xml's <application> tag, which will cause that class to be instantiated for you when the process for your application/package is created. Base class for those who need to maintain global application state. You can provide your own implementation by specifying its name in your AndroidManifest.xml's <application> tag, which will cause that class to be instantiated for you when the process for your application/package is created.

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转载于:https://www.cnblogs.com/bhlsheji/p/4819306.html

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