HarmonyOS开发57：不同页面中的跳转

上一篇文章写的是同一个页面中不同子页面的跳转，分为三种情况

本篇文章也一样，有两种不同页面中的跳转方式，分别是

• A页面跳转B页面（其实就是跳转B页面中第一个展示出来的子界面上）
• A页面跳转B页面其他子界面

分为上述两种方式，每种方式又分为三种情况，与上篇文章所述三种情况累计一共九种页面跳转方式

代码实现：

1、ability_main.xml代码：

<DirectionalLayout
    xmlns:ohos="http://schemas.huawei.com/res/ohos"
    ohos:height="match_parent"
    ohos:width="match_parent"
    ohos:alignment="center"
    ohos:orientation="vertical">

    <Button
        ohos:id="$+id:but1"
        ohos:height="match_content"
        ohos:width="match_content"
        ohos:background_element="#21A8FD"
        ohos:layout_alignment="horizontal_center"
        ohos:text="跳转1"
        ohos:text_size="40vp"
        />

    <Button
        ohos:id="$+id:but2"
        ohos:height="match_content"
        ohos:width="match_content"
        ohos:background_element="#791651"
        ohos:layout_alignment="horizontal_center"
        ohos:text="跳转2"
        ohos:text_size="40vp"
        ohos:top_margin="30vp"
        />

DirectionalLayout>

2、创建第二个Ability

起名为SecondAbility.java，编译器会自动配置文件

3、创建一个其他子页面

同时写此页面的xml

ability_second.xml内容：

<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:height="match_content"
        ohos:width="match_content"
        ohos:background_element="$graphic:background_ability_second"
        ohos:layout_alignment="horizontal_center"
        ohos:text="第二个页面中的主要子页面"
        ohos:text_size="25vp"
        />

DirectionalLayout>

ability_second_nomain.xml内容：

<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:height="match_content"
        ohos:width="match_content"
        ohos:background_element="$graphic:background_ability_second"
        ohos:layout_alignment="horizontal_center"
        ohos:text="第二个页面中的其他子页面"
        ohos:text_size="25vp"
        />

DirectionalLayout>

4、修改SecondAbility.java

package com.example.myapplication;

import com.example.myapplication.slice.SecondAbilitySlice;
import com.example.myapplication.slice.SecondAbilitySliceNoMain;
import ohos.aafwk.ability.Ability;
import ohos.aafwk.content.Intent;

public class SecondAbility extends Ability {
    @Override
    public void onStart(Intent intent) {
        super.onStart(intent);
        super.setMainRoute(SecondAbilitySlice.class.getName());

        addActionRoute("secondabilityslicenomain",SecondAbilitySliceNoMain.class.getName());

    }
}

同时要配置config.json文件，复制MainAbility中的actions给SecondAbility重写

{
  "app": {
    "bundleName": "com.example.myapplication",
    "vendor": "example",
    "version": {
      "code": 1000000,
      "name": "1.0.0"
    }
  },
  "deviceConfig": {},
  "module": {
    "package": "com.example.myapplication",
    "name": ".MyApplication",
    "mainAbility": "com.example.myapplication.MainAbility",
    "deviceType": [
      "phone"
    ],
    "distro": {
      "deliveryWithInstall": true,
      "moduleName": "entry",
      "moduleType": "entry",
      "installationFree": false
    },
    "abilities": [
      {
        "skills": [
          {
            "entities": [
              "entity.system.home"
            ],
            "actions": [
              "action.system.home"
            ]
          }
        ],
        "orientation": "unspecified",
        "name": "com.example.myapplication.MainAbility",
        "icon": "$media:icon",
        "description": "$string:mainability_description",
        "label": "$string:entry_MainAbility",
        "type": "page",
        "launchType": "standard"
      },
      {
        "skills": [
          {
            "actions": [
              "secondabilityslicenomain"
            ]
          }
        ],
        "orientation": "unspecified",
        "name": "com.example.myapplication.SecondAbility",
        "icon": "$media:icon",
        "description": "$string:secondability_description",
        "label": "$string:entry_SecondAbility",
        "type": "page",
        "launchType": "standard"
      }
    ]
  }
}

5、修改MainAbilitySlice.java

package com.example.myapplication.slice;

import com.example.myapplication.ResourceTable;
import ohos.aafwk.ability.AbilitySlice;
import ohos.aafwk.content.Intent;
import ohos.aafwk.content.Operation;
import ohos.agp.components.Button;
import ohos.agp.components.Component;

public class MainAbilitySlice extends AbilitySlice implements Component.ClickedListener {
    Button but1;
    Button but2;

    @Override
    public void onStart(Intent intent) {
        super.onStart(intent);
        super.setUIContent(ResourceTable.Layout_ability_main);

        but1 = (Button) findComponentById(ResourceTable.Id_but1);
        but2 = (Button) findComponentById(ResourceTable.Id_but2);


        but1.setClickedListener(this);
        but2.setClickedListener(this);

    }

    @Override
    public void onClick(Component component) {
        if (component == but1) {
            //就要跳转到第二个页面中的主要子界面中
            //创建意图对象
            Intent i = new Intent();
            Operation operation = new Intent.OperationBuilder()
                    .withDeviceId("")   //双引号即代表本机
                    .withBundleName("com.example.myapplication") //跳转到哪个应用
                    .withAbilityName("com.example.myapplication.SecondAbility") //哪个页面
                    .build();
            i.setOperation(operation);
            startAbility(i);
        } else if (component == but2) {
            //就要跳转到第二个页面中的其他子界面中
            Intent i = new Intent();
            Operation operation = new Intent.OperationBuilder()
                    .withAction("secondabilityslicenomain")
                    .build();
            i.setOperation(operation);
            startAbility(i);
        }
    }

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

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

}

6、运行效果

如果是有参数无返回或有参数有返回的方式，请参考上一篇文章，做法类似