button更多信息不可见!!!!
xml菜单: -
<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android">
<item
android:id="@+id/more_information"
android:title="@string/action_mnn"
/>
</menu>
主要活动: -
package com.example.yashchaudhary.modernartui;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
public class MainActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
@Override
public boolean onCreateOptionsMenu(Menu menu){
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.main_menu, menu);
return true;
}
public boolean onOptionsItemSelected(MenuItem item){
switch (item.getItemId()){
case R.id.more_information:
return true;
default :
return super.onOptionsItemSelected(item);
}
}
}
点击3点后截图
答案 0 :(得分:0)
就我而言,它是特定于活动布局中操作栏的主题
<androidx.appcompat.widget.Toolbar
android:id="@+id/toolbar"
android:theme="@style/ThemeOverlay.MaterialComponents.Dark.ActionBar"
.../>
删除主题属性解决了我的问题
答案 1 :(得分:-1)
尝试添加到菜单xml
上的项目android:orderInCategory="100"
并在
之后添加break;
case R.id.more_information:
return true;