pageability
  │  ContinuationAbility.java 	#迁移Ability 示例
  │  FirstAbility.java 		#同一Page Ability内不同Slice导航 示例
  │  MainAbility.java 		#主Ability
  │  MyApplication.java 	#启动入口
  │  SecondAbility.java 	#不同Page间的AbilitySlice导航 示例
  │
  └─slice
          ContinuationAbilitySlice.java #迁移Slice
          FirstAbilityMainSlice.java 	#FirstAbility的默认Slice
          FirstAbilitySecondSlice.java 	#FirstAbility的第二个Slice
          MainAbilitySlice.java		#MainAbility默认Slice
          SecondAbilityMainSlice.java   #SecondAbility的默认Slice
          SecondAbilitySecondSlice.java #SecondAbility的第二个Slice
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├─layout
│      continuation_ability.xml 	#迁移页面布局
│      first_ability_main_slice.xml	#FirstAbilityMainSlice的页面布局
│      first_ability_second_slice.xml 	#FirstAbilitySecondSlice的页面布局
│      main_ability_slice.xml		#MainAbilitySlice的页面布局
│      second_ability_main_slice.xml	#SecondAbilityMainSlice的页面布局
│      second_ability_second_slice.xml	#SecondAbilitySecondSlice的页面布局
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//监听按钮点击事件
presentButton.setClickedListener(
  //启动同一Page Ability的其它slice（lambda表达式的写法）
  component -> presentForResult(new FirstAbilitySecondSlice(), new Intent(),REQUEST_CODE));

/**
 * 从其它slice返回数据时，回调此函数
 * @param requestCode
 * @param resultIntent
 */
@Override
protected void onResult(int requestCode, Intent resultIntent) {
  //可以做安全验证
  if (requestCode == REQUEST_CODE && resultIntent != null) {
     //根据key从Intent中获取从其它slice返回的数据并显示
     messageText.setText(resultIntent.getStringParam(FirstAbilitySecondSlice.RESULT_KEY));
  }
} 
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public class FirstAbilitySecondSlice extends AbilitySlice {
   
  public static final String RESULT_KEY = "ohos.samples.pageability.data";

    @Override
    protected void onStart(Intent intent) {
      super.onStart(intent);
      super.setUIContent(ohos.samples.pageability.ResourceTable.Layout_first_ability_second_slice);
      initComponents();
      //设置返回数据
      setResult();
    }

    /**
     * 存储要传递的数据到Intent
     */
    private void setResult() {
        Intent intent = new Intent();
        intent.setParam(RESULT_KEY, "{name:'zhangsan',age:20}");
        //当能力切片调用 terminate() 方法时，将当前方法设置的结果数据传递给调用者。
        setResult(intent);
    }
}

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//监听按钮点击事件
presentButton.setClickedListener(
     //启动同一Page Ability的其它slice，不需要返回数据
     component -> present(new FirstAbilitySecondSlice(), new Intent()));
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//启动不同Page间的AbilitySlice,默认slice
startSecondButton.setClickedListener(this::startSecondAbilitySlice);
/**
 * 导航到Page默认的slice页面
 * @param component
 */
private void startSecondAbilitySlice(Component component) {
    Intent intent = new Intent();
    Operation operation = new Intent.OperationBuilder().withDeviceId("")
            //空代表默认路由，也就是默认的slice
            .withAction("")
            .withBundleName(getBundleName())
            .withAbilityName(SecondAbility.class.getName())
            .build();
    intent.setOperation(operation);
    //启动
    startAbility(intent);
}

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//监听事件，启动不同Page间的AbilitySlice,非默认slice
presentSecondButton.setClickedListener(this::startAbilitySlice);

/**
 * 如果导航的slice不是Page默认的slice，
 * 需要根据设置的路由进行导航
 * @param component
 */
private void startAbilitySlice(Component component) {
    Intent intent = new Intent();
    Operation operation = new Intent.OperationBuilder().withDeviceId("")
            //指定导航路由
            .withAction(ACTION)
            .withBundleName(getBundleName())
            .withAbilityName(SecondAbility.class.getName())
            .build();
    intent.setOperation(operation);
    //启动
    startAbility(intent);
}
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@Override
public boolean onSaveData(IntentParams intentParams) {
    HiLog.debug(LABEL_LOG, "onSaveData");
    //迁移时，设置需要传递的数据
    intentParams.setParam(MESSAGE_KEY, messageTextField.getText());
    return true;
}
@Override
public boolean onRestoreData(IntentParams intentParams) {
    HiLog.debug(LABEL_LOG, "onRestoreData");
    //验证返回数据类型
    if (intentParams.getParam(MESSAGE_KEY) instanceof String) {
        //获取待恢复的数据
        message = (String) intentParams.getParam(MESSAGE_KEY);
        //恢复成功
        isContinued = true;
    }
    return true;
}
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