第一次Android应用程序错误 [英] First time android application errors
问题描述
所以这是第一次使用的香港专业教育学院Eclipse和Android和我只是想创建一个项目。
So this is the first time ive used eclipse and android and am just trying to create a project.
我经历的步骤去创建一个新的Android项目,以创建一个简单的HelloWorld的apk到我的手机上使用。
I went through the steps to create a new android project to create a simple helloworld apk to use on my phone.
我还没有添加任何code自己竟然有许多错误,什么都不会编译。我不知道该怎么办有人可以帮助请。这里是所有code和错误。
I have not added any code myself yet there are many errors and nothing will compile. I dont know what to do can someone help please. here is all the code and errors.
Mainactivity.java
Mainactivity.java
package com.rikin.myfirstapplication;
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
public class MainActivity extends ActionBarActivity {
@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) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
}
activity_main.xml中
Activity_main.xml
<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"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context="com.rikin.myfirstapplication.MainActivity" >
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/hello_world" />
</RelativeLayout>
错误:
Error:
也得到这样的:
推荐答案
到属性
- > 的Android
- >添加 appcompat_v7
库。
Go to Properties
-> Android
-> add appcompat_v7
library.
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