MainAbilitySlice.java

public class MainAbilitySlice extends AbilitySlice {
   @Override
   public void onStart(Intent intent) {
       super.onStart(intent);
       super.setUIContent(ResourceTable.Layout_ability_main);
       Button button = (Button) findComponentById(ResourceTable.Id_button);
       if (button != null) {
           // 为按钮设置点击回调
           button.setClickedListener(new Component.ClickedListener() {
               @Override
               public void onClick(Component component) {

button.setClickedListener(new Component.ClickedListener(){
                   public void onClick(Component v){
                       Intent intent = new Intent();
                       Operation operation = new Intent.OperationBuilder()
                               .withAction(Intent.ACTION_QUERY_WEATHER)
                               .build();
                       intent.setOperation(operation);
                       startAbility(intent);
                   }
               });

           }
       });
   }
}

MyAbilitySlice

public class MyAbilitySlice extends AbilitySlice {
   @Override
   public void onStart(Intent intent) {
       super.onStart(intent);
       super.setUIContent(ResourceTable.Layout_ability_my);
   }

   @Override
   public void onActive() {
       super.onActive();
   }

   @Override
   public void onForeground(Intent intent) {
       super.onForeground(intent);
   }
}

ability_main.xml

<?xml version="1.0" encoding="utf-8"?>
<DirectionalLayout
   xmlns:ohos="http://schemas.huawei.com/res/ohos"
   ohos:height="match_parent"
   ohos:width="match_parent"
   ohos:alignment="center"
   ohos:orientation="vertical">

   <Text
       ohos:id="$+id:text_helloworld"
       ohos:height="match_content"
       ohos:width="match_content"
       ohos:background_element="$graphic:background_ability_main"
       ohos:layout_alignment="horizontal_center"
       ohos:text="$string:mainability_HelloWorld"
       ohos:text_size="40vp"
       />

   <Button
       ohos:id="$+id:button"
       ohos:width="match_content"
       ohos:height="match_content"
       ohos:text="天气查询"
       ohos:text_size="19fp"
       ohos:text_color="#FFFFFF"
       ohos:top_padding="8vp"
       ohos:bottom_padding="8vp"
       ohos:right_padding="70vp"
       ohos:left_padding="70vp"
       ohos:background_element="$graphic:background_button"
       ohos:center_in_parent="true"
       ohos:align_parent_bottom="true"
       ohos:bottom_margin="40vp"/>


</DirectionalLayout>

ability_my.xml

<?xml version="1.0" encoding="utf-8"?>
<DirectionalLayout
   xmlns:ohos="http://schemas.huawei.com/res/ohos"
   ohos:height="match_parent"
   ohos:width="match_parent"
   ohos:alignment="center"
   ohos:orientation="vertical">

   <Text
       ohos:id="$+id:text_helloworld"
       ohos:height="match_content"
       ohos:width="match_content"
       ohos:background_element="$graphic:background_ability_my"
       ohos:layout_alignment="horizontal_center"
       ohos:text="$string:myability_HelloWorld"
       ohos:text_size="40vp"
       />
</DirectionalLayout>