没有动作或图标显示在动作条;只有在溢出 [英] No actions or icons showing on the actionbar; only in overflow

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问题描述

我不是真正的新节目,但一个完整的新鲜小白关于机器人和Java。

我最近作出的决定将程序的Andr​​oid应用程序使用此教程
我直到动作条,甚至可以显示像溢出搜索和设置一些行动。我不能设法要做的就是让一个动作出现在动作条(带或不带图标)。

我这个教程但我有点斜面重复它在我实际的Tutorialapp。

下面是我的code:

main.xml中:

 <?XML版本=1.0编码=UTF-8&GT?;
<菜单的xmlns:机器人=htt​​p://schemas.android.com/apk/res/android
的xmlns:程序=htt​​p://schemas.android.com/apk/res-auto
的xmlns:工具=htt​​p://schemas.android.com/tool​​s
工具:上下文=com.example.newapp.MainActivity><项目
    机器人:ID =@ + ID / action_settings
    机器人:orderInCategory =100
    机器人:标题=@字符串/ action_settings
    应用:showAsAction =从不/>
<项目
    机器人:ID =@ + ID / ACTION_SEARCH
    机器人:orderInCategory =1
    机器人:图标=@绘制/ ic_action_search
    机器人:标题=@字符串/ ACTION_SEARCH
    机器人:showAsAction =总是/>
&所述; /菜单>

MainActivity.java:

 包com.example.newapp;进口android.support.v7.app.ActionBarActivity;
进口android.content.Intent;
进口android.os.Bundle;
进口android.view.Menu;
进口android.view.MenuItem;
进口android.view.View;
进口android.widget.EditText;
进口android.widget.Toast;公共类MainActivity扩展ActionBarActivity {公共最后静态字符串EXTRA_MESSAGE =com.example.newapp.MESSAGE;@覆盖
保护无效的onCreate(捆绑savedInstanceState){
    super.onCreate(savedInstanceState);
    的setContentView(R.layout.activity_main);
}@覆盖
公共布尔onCreateOptionsMenu(菜单菜单){    //充气菜单;如果是present这增加了项目操作栏。
    。getMenuInflater()膨胀(R.menu.main,菜单);
    返回true;
}@覆盖
公共布尔onOptionsItemSelected(菜单项项){
    INT ID = item.getItemId();
    如果(ID == R.id.action_settings){
        返回true;
    }    开关(item.getItemId()){    案例R.id.action_search:
        OpenSearch的();
        返回true;    默认:
        返回super.onOptionsItemSelected(项目);
    }
}私人无效的OpenSearch(){
    Toast.makeText(这一点,这是一个搜索按钮,Toast.LENGTH_SHORT).show();}公共无效的sendMessage(查看视图){
    意向意图=新意图(这一点,DisplayMessageActivity.class);
    EDITTEXT的EditText =(EditText上)findViewById(R.id.edit_message);
    字符串消息= editText.getText()的toString()。
    intent.putExtra(EXTRA_MESSAGE,消息);
    startActivity(意向);
}
}


解决方案

请尝试换菜单项:

 <?XML版本=1.0编码=UTF-8&GT?;
<菜单的xmlns:机器人=htt​​p://schemas.android.com/apk/res/android><项目
机器人:ID =@ + ID / ACTION_SEARCH
机器人:图标=@绘制/ ic_action_search
机器人:标题=@字符串/ ACTION_SEARCH
机器人:showAsAction =总是/>
 <项目
   机器人:ID =@ + ID / action_settings
   机器人:orderInCategory =101
   机器人:标题=@字符串/ action_settings
   应用:showAsAction =从不/>
&所述; /菜单>

I'm not really new to programming but a complete fresh noob regarding android and java.

I recently made the decision to programm an Android App using this tutorial. I got till the actionbar and can even display some actions like search and settings in the overflow. What I cant manage to do is to let an action appear on the actionbar(with or without icon).

I managed to it once with this tutorial but I somehow cant repeat it on my actual "Tutorialapp".

Here is my code:

main.xml:

<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
tools:context="com.example.newapp.MainActivity" >

<item
    android:id="@+id/action_settings"
    android:orderInCategory="100"
    android:title="@string/action_settings"
    app:showAsAction="never"/>
<item
    android:id="@+id/action_search"
    android:orderInCategory="1"
    android:icon="@drawable/ic_action_search"
    android:title="@string/action_search"
    android:showAsAction="always"/>
</menu>

MainActivity.java:

package com.example.newapp;

import android.support.v7.app.ActionBarActivity;
import android.content.Intent;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.EditText;
import android.widget.Toast;

public class MainActivity extends ActionBarActivity {

public final static String EXTRA_MESSAGE = "com.example.newapp.MESSAGE";

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {

    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.main, menu);
    return true;
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    int id = item.getItemId();
    if (id == R.id.action_settings) {
        return true;
    }

    switch (item.getItemId()) {

    case R.id.action_search:
        openSearch();
        return true;

    default:
        return super.onOptionsItemSelected(item);
    }
}

private void openSearch() {
    Toast.makeText(this, "This is a Search Button", Toast.LENGTH_SHORT).show();

}

public void sendMessage (View view){
    Intent intent = new Intent(this, DisplayMessageActivity.class);
    EditText editText = (EditText) findViewById(R.id.edit_message);
    String message = editText.getText().toString();
    intent.putExtra(EXTRA_MESSAGE, message);
    startActivity(intent);
}
}

解决方案

try swapping the menu items:

<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android" >

<item
android:id="@+id/action_search"
android:icon="@drawable/ic_action_search"
android:title="@string/action_search"
android:showAsAction="always"/>


 <item
   android:id="@+id/action_settings"
   android:orderInCategory="101"
   android:title="@string/action_settings"
   app:showAsAction="never"/>
</menu>

这篇关于没有动作或图标显示在动作条;只有在溢出的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!

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