我要补充一个ID？ [英] Should I add an ID?

问题描述

这是我目前的code。

 包com.aaaa.ffff;进口android.app.Fragment;
进口android.os.Bundle;
进口android.view.LayoutInflater;
进口android.view.Menu;
进口android.view.MenuInflater;
进口android.view.View;
进口android.view.ViewGroup;公共类HomeFragment扩展片段{公共HomeFragment（）{}@覆盖
公共无效的onCreate（捆绑savedInstanceState）{
super.onCreate（savedInstanceState）;//为了使该方法接听电话
setHasOptionsMenu（真）;
}@覆盖
公共查看onCreateView（LayoutInflater充气器，容器的ViewGroup，
捆绑savedInstanceState）{查看rootView = inflater.inflate（R.layout.fragment_home，集装箱，FALSE）;返回rootView;
}@覆盖
公共无效onCreateOptionsMenu（菜单菜单，MenuInflater气筒）{
inflater.inflate（R.menu.main，菜单）;
}}
 

它显示一个操作栏图标。我从这里

  @覆盖
公共布尔onOptionsItemSelected（菜单项项）{
    在操作栏项目//处理presses
    开关（item.getItemId（））{
        案例R.id.action_search：
            OpenSearch的（）;
            返回true;
        默认：
            返回super.onOptionsItemSelected（项目）;
    }
}
 

我怎么代替的OpenSearch ？难道是我的活动？另外，我需要添加其他切换活动？我是新来这的方式，所以任何帮助将是巨大的。

解决方案

  OpenSearch的（）;基本上是，当您单击菜单中的特定按钮调用的方法。
 

您可以替换 OpenSearch的（）与您要拨打第二次活动，当你preSS在这个code菜单的按钮：

 意向意图=新意图（MainActivity.this，SecondActivity.class）;
startActivity（意向）;
 

基本上的OpenSearch 表示，搜索功能将被执行，当您单击操作栏中的搜索图标。

您可以Google一下。有很多例子。

This is my current code.

    package com.aaaa.ffff;

import android.app.Fragment;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.View;
import android.view.ViewGroup;

public class HomeFragment extends Fragment {

public HomeFragment(){}

@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);

//In order for this method to receive calls
setHasOptionsMenu(true);
}

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {

View rootView = inflater.inflate(R.layout.fragment_home, container, false);

return rootView;
}

@Override
public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
inflater.inflate(R.menu.main, menu);
}

}

It displays a action bar icon. I got this code from here

    @Override
public boolean onOptionsItemSelected(MenuItem item) {
    // Handle presses on the action bar items
    switch (item.getItemId()) {
        case R.id.action_search:
            openSearch();
            return true;
        default:
            return super.onOptionsItemSelected(item);
    }
}

What do I substitute for openSearch? Would it be my activity? Also do I need to add anything else to switch activities? I'm new to this by the way, so any help would be great.

解决方案

openSearch(); is basically a method called when you click that particular button in the menu.

You can substitute openSearch() with a second activity you want to call when you press that button in the menu by this code :

Intent intent = new Intent(MainActivity.this, SecondActivity.class);
startActivity(intent);

Basically openSearch denotes that a search function is to be performed when you click search icon in the action bar.

You can Google it. There are many examples.

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