昨天跑通了鴻蒙的helloWord，蠻高興的，正準備繼續深入的時候，在網上看到這樣一篇文章

我按照文章的說法復盤了一下，貼出代碼，供大家交流。

1.當helloWord跑起來后，在build\intermediates\shell\debug\src\main目錄下確實有Android 代碼

2、打開AndroidManifest.xml文件，可以看到Android配置信息

3、打開配置文件指向的ShellMyApplication.java文件，發現ShellMyApplication繼承了HarmonyApplication

4、按住Ctrl點擊HarmonyApplication，進入HarmonyApplication類，并定位，發現依賴包，可以看到在依賴包里有對Android Application和三大組件的代理類

5、進入AbilityShellActivity類，可以看到對Android Activity的代理

6、根據這些情況，實際上，我們可以在鴻蒙的項目里寫Android代碼，首先引入Android依賴包

implementation 'com.google.android:android:4.1.1.4'

7、在MyApplication類中獲取Android的Application

public class MyApplication extends AbilityPackage {

@Override

public void onInitialize() {

super.onInitialize();

}

public static Application getApp(){

try {

return (Application)Class.forName("android.app.ActivityThread").getMethod("currentApplication").invoke(null,(Object[])null);

}catch (Exception e){

e.printStackTrace();

}

return null;

}

}

8、嘗試輸出Android Log和Toast并成功

public class MainAbility extends Ability {

private Application application;

@Override

public void onStart(Intent intent) {

super.onStart(intent);

super.setMainRoute(MainAbilitySlice.class.getName());

application=MyApplication.getApp();

Log.e("來自Android的Log",application.getClass().getName());

Toast.makeText(application,"Android吐司",Toast.LENGTH_LONG).show();

}

}

9、監聽Android Activity的生命周期，日志現實當前Activity是MainAbilityShellActivity，就是build目錄里的Activity

MyApplication.getApp().registerActivityLifecycleCallbacks(new Application.ActivityLifecycleCallbacks() {

@Override

public void onActivityCreated(Activity activity, Bundle bundle) {

Log.e("來自Android的Log","onActivityCreated------>"+activity.getClass().getName());

}

@Override

public void onActivityStarted(Activity activity) {

Log.e("來自Android的Log","onActivityStarted------>"+activity.getClass().getName());

}

@Override

public void onActivityResumed(Activity activity) {

Log.e("來自Android的Log","onActivityResumed------>"+activity.getClass().getName());

}

@Override

public void onActivityPaused(Activity activity) {

Log.e("來自Android的Log","onActivityPaused------>"+activity.getClass().getName());

}

@Override

public void onActivityStopped(Activity activity) {

Log.e("來自Android的Log","onActivityStopped------>"+activity.getClass().getName());

}

@Override

public void onActivitySaveInstanceState(Activity activity, Bundle bundle) {

Log.e("來自Android的Log","onActivitySaveInstanceState------>"+activity.getClass().getName());

}

@Override

public void onActivityDestroyed(Activity activity) {

Log.e("來自Android的Log","onActivityDestroyed------>"+activity.getClass().getName());

}

});

10、用Android代碼調用Android系統APP設置頁面

android.content.Intent intent1=new android.content.Intent();

intent1.addFlags(android.content.Intent.FLAG_ACTIVITY_NEW_TASK);

intent1.setAction("android.settings.APPLICATION_DETAILS_SETTINGS");

intent1.setData(Uri.fromParts("package", MyApplication.getApp().getPackageName(), null));

MyApplication.getApp().startActivity(intent1);

11、用Android代碼調用Android系統撥號頁面

android.content.Intent intent1=new android.content.Intent(android.content.Intent.ACTION_DIAL,Uri.parse("tel:123456789"));

intent1.addFlags(android.content.Intent.FLAG_ACTIVITY_NEW_TASK);

MyApplication.getApp().startActivity(intent1);

12、最后，在鴻蒙的Ability上添加Android控件

MyApplication.getApp().registerActivityLifecycleCallbacks(new Application.ActivityLifecycleCallbacks() {

@Override

public void onActivityCreated(Activity activity, Bundle bundle) {

Log.e("來自Android的Log","onActivityCreated------>"+activity.getClass().getName());

}

@Override

public void onActivityStarted(Activity activity) {

Log.e("來自Android的Log","onActivityStarted------>"+activity.getClass().getName());

}

@Override

public void onActivityResumed(Activity activity) {

Log.e("來自Android的Log","onActivityResumed------>"+activity.getClass().getName());

FrameLayout frameLayout=(FrameLayout)activity.getWindow().getDecorView().findViewById(android.R.id.content);

View view=frameLayout.findViewById(1);

LinearLayout linearLayout;

if (view instanceof LinearLayout){

linearLayout=(LinearLayout)view;

}

else {

linearLayout=new LinearLayout(activity);

linearLayout.setLayoutParams(new ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT,ViewGroup.LayoutParams.MATCH_PARENT));

linearLayout.setOrientation(LinearLayout.VERTICAL);

frameLayout.addView(linearLayout);

}

TextView textView=new TextView(activity);

textView.setText("來自Android的TextView");

textView.setLayoutParams(new ViewGroup.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT,ViewGroup.LayoutParams.WRAP_CONTENT));

linearLayout.addView(textView);

android.widget.Button button=new android.widget.Button(activity);

button.setText("來自Android的button");

button.setLayoutParams(new ViewGroup.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT,ViewGroup.LayoutParams.WRAP_CONTENT));

linearLayout.addView(button);

}

@Override

public void onActivityPaused(Activity activity) {

Log.e("來自Android的Log","onActivityPaused------>"+activity.getClass().getName());

}

@Override

public void onActivityStopped(Activity activity) {

Log.e("來自Android的Log","onActivityStopped------>"+activity.getClass().getName());

}

@Override

public void onActivitySaveInstanceState(Activity activity, Bundle bundle) {

Log.e("來自Android的Log","onActivitySaveInstanceState------>"+activity.getClass().getName());

}

@Override

public void onActivityDestroyed(Activity activity) {

Log.e("來自Android的Log","onActivityDestroyed------>"+activity.getClass().getName());

}

});

編輯：hfy