49231103 因为我们有时候会用到全局变量application 在一个activity启动的时候我们把 这个activity加入到 application中 MyApplication.getInstance...().addActivity(this); 当我们退出的时候 比如onkeydown的时候用 MyApplication.getInstance().exit() 这个代码也只会在程序的主activity...中执行 首先我们是onKeyDown结束一个activity 这个时候如果直接调用MyApplication.getInstance().exit() 那么它会是这样执行的 会遍历所以加入的activity...与服务器的长连接 这个必须是自己手动断开的,也就是必须触发这个指令 那么这个代码就是在ondestroy()中执行的, 如果你直接在onkeyDown 也就是通常看见的连接点击退出程序的时候直接调用MyApplication.getInstance...void onDestroy() { // TODO Auto-generated method stub Log.i("TAG", "我是onDestroy"); BreakChatServe(); MyApplication.getInstance
目录 SpringApplication.run(MyApplication.class, args);如何启动springBoot项目的 run() ConfigurableApplicationContext...createApplicationContext(重要) prepareContext callRunners SpringApplication.run(MyApplication.class,...setListeners((Collection) getSpringFactoriesInstances(ApplicationListener.class)); //存储带有main方法的启动对象(本例MyApplication...) //deduceMainApplicationClass 获取推断主应用类 获取对应的MyApplication.class this.mainApplicationClass = deduceMainApplicationClass...ConfigurableApplicationContext.class }, context); // 将上下文 配置环境 监听器 应用参数 横幅传过去 //此时控制台打印Starting MyApplication
/com.example.myapplication D/hhhhh: ActivityB onCreate 04-25 10:14:03.859 6048-6048/com.example.myapplication.../com.example.myapplication D/hhhhh: ActivityC onStart 04-25 10:14:03.989 6048-6048/com.example.myapplication.../com.example.myapplication D/hhhhh: ActivityB onCreate 04-25 10:18:15.339 6636-6636/com.example.myapplication.../com.example.myapplication D/hhhhh: ActivityB onPause 04-25 10:18:15.419 6636-6636/com.example.myapplication.../com.example.myapplication D/hhhhh: ActivityA onStop 04-25 10:20:49.269 7005-7005/com.example.myapplication
*/ #ifndef _Included_com_example_realhe_myapplication_Test #define _Included_com_example_realhe_myapplication_Test...#ifdef __cplusplus extern "C" { #endif /* * Class: com_example_realhe_myapplication_Test * Method...(JNIEnv *, jobject); /* * Class: com_example_realhe_myapplication_Test * Method: set *...(JNIEnv *, jobject, jstring); /* * Class: com_example_realhe_myapplication_Test * Method:...ibj, jstring jsr){} /* * Class: com_example_realhe_myapplication_Test * Method: getToken
== MyApplication.SHOW_1_THEME_FLAG){ setTheme(R.style.MyTheme2); }else if(MyApplication.SHOW_THEME_FLAG...== MyApplication.SHOW_2_THEME_FLAG){ setTheme(R.style.MyTheme1); } super.onCreate(savedInstanceState...== MyApplication.SHOW_1_THEME_FLAG){ MyApplication.SHOW_THEME_FLAG = MyApplication.SHOW_2_...THEME_FLAG; }else if(MyApplication.SHOW_THEME_FLAG == MyApplication.SHOW_2_THEME_FLAG){...MyApplication.SHOW_THEME_FLAG = MyApplication.SHOW_1_THEME_FLAG; } Intent mIntent = getIntent
().exitApp(); 执行这个的前提是实现自定义个MyApplication,代码在后面。...我们在每个Activity的onCreate()方法中调用MyApplication.addActivity方法将当前activity保存进去。...等要退出应用时调用MyApplication.exitApp方法将所有activity都finish(); MyApplication代码如下: package com.zsx.base; import...= null; //要保证每个Activity中使用的MyApplication都是同一个,就用到了单例模式 //单例模式:只有一个对象,也就是上面的那个myApp只实例化一次...MyApplication getInstance(){ if(myApp == null ){ myApp = new MyApplication();
1 public class MyApplication extends Application { 2 private static MyApplication singleton; 3...创建新的状态变量和全局资源,在程序中我们可以通过以下方式使用它: 1 MyApplication myApp = MyApplication.getInstance();//获取Application...1、首先创建MyApplication去继承Application类 1 public class MyApplication extends Application { 2 private...类中,包含了一个MyApplication的实例变量和一个测试变量。 ...2、在MainActivity中获取MyApplication的实例化对象,并且改变MyApplication中test变量的值。
在MainActivity的同级目录,新建一个hello.java,然后做一个简单的实现, package com.example.myapplication; public class hello.../java com.example.myapplication.hello 此时,会在main目录下面生成一个和cpp,java同级的目录jni。 在该目录结构里面新建hello.cpp。...将com_example_myapplication_hello.h中的内容复制进hello.cpp中,并且进行方法的实现, #include <jni.h /* Header for class com_example_myapplication_hello...*/ #ifndef _Included_com_example_myapplication_hello #define _Included_com_example_myapplication_hello...* Signature: (II)I */ #include "com_example_myapplication_hello.h" JNIEXPORT jint JNICALL Java_com_example_myapplication_hello_add
* @author yong.wang * */ public class MyApplication extends Application { private String name; @Override...name; } public void setName(String name) { this.name = name; } private static final String NAME = "MyApplication..."; } Ok,应用程序创建好了,不过我们应该在配置文件ApplicationManifest.xml中将要运行的应用程序MyApplication加进去,修改下: <?..." 就是这儿,将我们以前一直用的默认Application给他设置成我们自己做的MyApplication <activity android:name=".MyFirstActivity" android...” ,在此那么就分配好了进程ID,再下面,我们就要运行我们的Activity了 public class MyFirstActivity extends Activity { private MyApplication
看看下面的代码package com.ossez.java.legacy;public class MyApplication {private EmailService email = new EmailService...msg, String rec){//do some msg validation, manipulation logic etcthis.email.sendEmail(msg, rec);}}在 MyApplication...那就说明 MyApplication 依赖 EmailService 对象。假设如果我们在 MyApplication 对象中,不对 EmailService 对象进行初始化,猜猜会有什么?...空对象异常呀,因为被依赖的对象没有初始化,同时还有一个问题就是如果 EmailService 改变了 MyApplication 如何获得改变后的 EmailService 对象?...简单就是为了解决问题:如果 EmailService 改变了 MyApplication 如何获得改变后的 EmailService 对象?这个解决方法就是注入依赖。
其他的都属于封装,但是真正来讲,开发中会使用的封装只有:private、protected 【举例】:观察protected访问控制权限 定义demoa.A程序类 package com.example.myapplication.demoa...; import com.example.myapplication.demoa.A; public class B extends A { public void print(){...测试程序 package com.example.myapplication; import androidx.appcompat.app.AppCompatActivity; import android.os.Bundle...; import com.example.myapplication.demob.B; public class MainActivity extends AppCompatActivity {...,而后每个单次的首字母大写,eg:studentName; 方法名称:第一个单次的字母小写,而后每个单次的首字母大写,eg:setName; 包名称:所有的字母全部小写,eg:com.example.myapplication
第一步:获取存储的路径 我们用/sdcard/Android/data/包名/的路径 方便我们测试查看 String path=MyApplication.getContextObject().getExternalFilesDir...R.drawable.account); Bitmap bitmap=bitmapDrawable.getBitmap(); if (bitmap == null) { Toast.makeText(MyApplication.getContextObject...Toast.LENGTH_LONG).show(); } catch (IOException e) { e.printStackTrace(); } 完整代码 String path=MyApplication.getContextObject...FileNotFoundException e) { e.printStackTrace(); } BitmapDrawable bitmapDrawable = (BitmapDrawable)MyApplication.getContextObject...R.drawable.account); Bitmap bitmap=bitmapDrawable.getBitmap(); if (bitmap == null) { Toast.makeText(MyApplication.getContextObject
我们在底层系统上安装完软件,需要一些权限,那么这个配置主要是为了获取这些权限要配的,具体的如下 好的,下面我们贴出配置的详细代码 { "app": { "bundleName": "com.example.myapplication..."name": "1.0.0" } }, "deviceConfig": { }, "module": { "package": "com.example.myapplication...", "name": ".MyApplication", "mainAbility": "com.example.myapplication.MainAbility", "deviceType..."action.system.home" ] } ], "name": "com.example.myapplication.MainAbility..."$string:entry_MainAbility", "usedScene": { "ability": [ "com.example.myapplication.MainAbility
在方法中实现修改属性的逻辑: extern "C" JNIEXPORT void JNICALL Java_com_example_myapplication_MainActivity_accessField...,添加如下代码: extern "C" JNIEXPORT void JNICALL Java_com_example_myapplication_MainActivity_accessStaticField...,添加如下代码: extern "C" JNIEXPORT jstring JNICALL Java_com_example_myapplication_MainActivity_accessMethod...__I,添加如下代码: extern "C" JNIEXPORT jint JNICALL Java_com_example_myapplication_MainActivity_accessStaticMethod...,添加如下代码: extern "C" JNIEXPORT jobject JNICALL Java_com_example_myapplication_MainActivity_accessConstructor
应用程序的主类是一个类,它包含一个启动Spring ApplicationContext的public static void main()方法: @SpringBootApplication public class MyApplication...Spring的Jar包或War包的META-INF/MANIFEST.MF清单如下: Manifest-Version: 1.0 Start-Class: com.example.MyApplication...-- The main class to start by executing "java -jar" --> com.example.MyApplication com.example.MyApplication... 还可以通过命令行界面指定主类: java -cp bootApp.jar -Dloader.main=com.example.MyApplication
,Bundle name: com.example.myapplication,Save location 选择需要创建的目录,这里使用 MyApplication 目录 (~/projects/MyApplication.../MyApplication/entry/src/main/ets/app.scss.xss.js 0.10 kB │ gzip: 0.10 kB │ map: 0.10.../MyApplication/entry/src/main/ets/index.scss.xss.js 0.10 kB │ gzip: 0.10 kB │ map: 0.10.../MyApplication/entry/src/main/ets/app.ets 2.21 kB │ gzip: 0.86 kB...../MyApplication/entry/src/main/ets/render.ets 5.76 kB │ gzip: 1.23 kB..
【举例】:定义包 package com.example.myapplication; 一旦程序中声明了包,就必须将生成的*.class文件保存在包里面,这个包并不是手工创建的,Java中专门提供了打包编译的操作...【举例】:定义一个com.example.myapplication.util.Message类 package com.example.myapplication.util; class Message...类 package com.example.myapplication.test; import com.example.myapplication.util.Message; public class...Message msg = new Message(); msg.getInfo(); } } 此时编译,出现如下错误: Message在com.example.myapplication.util...【举例】:修改Message类的定义 package com.example.myapplication.util; publi class Message { public void getInfo
代码目录 官方推荐的代码目录是这样: com +- example +- myapplication +- MyApplication.java |...main启动入口类MyApplication.java放在根目录,便于查找其他文件。 其他模块跟MyApplication.java并列。...{ public static void main(String[] args) { SpringApplication.run(MyApplication.class, args...$ java -jar target/myapplication-0.0.1-SNAPSHOT.jar 开启远程调式 $ java -Xdebug -Xrunjdwp:server=y,transport...=dt_socket,address=8000,suspend=n \ -jar target/myapplication-0.0.1-SNAPSHOT.jar ③maven $ mvn
首先新建一个MyApplication并让它继承自Application,然后在AndroidManifest.xml文件中对MyApplication进行指定,如下所示: <application...我们来做个实验试一下就知道了: public class MyApplication extends Application { public MyApplication() { String...一个非常典型的例子如下所示: public class MyApplication extends Application { private static MyApplication app;...public static MyApplication getInstance() { if (app == null) { app = new MyApplication(); }...Application { private static MyApplication app; public static MyApplication getInstance() {
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