我正试图在没有运气的情况下向操作栏添加按钮。没有错误。按钮位于@drawable中。但它没有显示出来。 我做错了什么?
(它要求我添加更多详细信息,但我没有其他内容可以添加)
测试活动:
import android.content.Intent;
import android.os.Bundle;
import android.support.v7.app.ActionBarActivity;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.View;
import android.widget.Button;
public class test extends ActionBarActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.test);
setupCREATEbut();
}
private void setupCREATEbut() {
Button CREATEbut = (Button) findViewById (R.id.appenter2);
CREATEbut.setOnClickListener(new View.OnClickListener(){
@Override
public void onClick(View v){
Intent intent = new Intent(v.getContext(), MainActivity.class);
startActivityForResult(intent,0);
}
});
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.topmenu, menu);
return super.onCreateOptionsMenu(menu);
}
}
测试xml:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="rs.test">
<LinearLayout
android:id="@+id/centerblock"
android:layout_width="400dp"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_centerVertical="true"
android:orientation="vertical" >
<RelativeLayout
android:id="@+id/relcenterblock"
android:layout_width="fill_parent"
android:layout_height="415dp" >
<Button
android:id="@+id/appenter2"
android:layout_width="160dip"
android:layout_height="160dip"
android:layout_centerHorizontal="true"
android:layout_centerVertical="true"
android:background="@drawable/bigroundbutton"
android:gravity="center"
android:text="@string/request"
android:textColor="#ffffff"
android:textSize="30sp" />
</RelativeLayout>
</LinearLayout>
</RelativeLayout>
topmenu xml:
<menu xmlns:android="http://schemas.android.com/apk/res/android" >
<item android:id="@+id/action_search"
android:icon="@drawable/ic_action_toprightmenu"
android:title="@string/toprightmenu"/>
</menu>
答案 0 :(得分:2)
尝试使用showAsAction=always
或showAsAction=ifRoom
。
<?xml version="1.0" encoding="utf-8"?>
<menu
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:yourapp="http://schemas.android.com/apk/res-auto">
<item android:id="@+id/action_search"
android:icon="@drawable/ic_action_toprightmenu"
android:title="@string/toprightmenu"
yourapp:showAsAction="always"/>
</menu>