应用程序名称是 Eclipse MainActivity？
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App Name is Eclipse MainActivity?
提问by PrommeringsDisplay
I have finished a tip calculator app, but when I run it the name is MainActivity, I don't know how to change it, I have tried editing strings.xmlbut when I run the app I get errors,I don't know what else to try, any suggestions for what I can do to change it so it appears on the emulator
我已经完成小费计算器应用程序，但是当我运行它的名字是MainActivity，我不知道如何去改变它，我试图编辑strings.xml但是当我运行该应用程序我得到的错误，我不知道还有什么尝试，关于我可以做些什么来改变它的任何建议，以便它出现在模拟器上
on strings.xml...
在strings.xml...
name:title_activity_mainvalue:MainActivity
名称：title_activity_main值：MainActivity
also here is my java code will i have to change anything here?
这也是我的 java 代码，我必须在这里更改任何内容吗？
package tip.calculator;
import android.os.Bundle;
import android.app.Activity;
import android.view.View.OnClickListener;
import android.widget.EditText;
import android.widget.TextView;
import android.view.View;
import android.widget.Button;
import java.text.DecimalFormat;
public class TipCalculator extends Activity
{
private EditText myEditField;
private EditText myEditField2;
private Button enter;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
myEditField2 = (EditText) findViewById(R.id.billText);
myEditField = (EditText) findViewById(R.id.percentText);
enter = (Button)findViewById(R.id.button1);
enter.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
TextView textView;
textView = (TextView) findViewById(R.id.textView1);
final EditText myEditField = (EditText) findViewById(R.id.percentText);
final EditText myEditField2 = (EditText) findViewById(R.id.billText);
float percentage;
float percentageInp;
float billAmount;
double output;
String output1;
percentageInp = Float.parseFloat(myEditField.getText().toString());
billAmount = Float.parseFloat(myEditField2.getText().toString());
percentage = ((float)percentageInp /100);
output = (double)(billAmount * percentage);
double result = output * 100;
result = Math.round(result);
result = result / 100;
output1 = Double.toString(result);
textView.setText(output1);
}
});
}
}
manifest.xml ...
清单.xml ...
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="tip.calculator"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="13"
android:targetSdkVersion="15" />
<application
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" android:debuggable="true">
<activity
android:name=".TipCalculator"
android:label="@string/title_activity_main" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
here is my strings.xml
这是我的strings.xml
<resources>
<string name="app_name">Tip Calculator</string>
<string name="hello_world">Hello world!</string>
<string name="menu_settings">Settings</string>
<string name="title_activity_main">MainActivity</string>
</resources>
回答by Niko Adrianus Yuwono
change the label
更改标签
android:label="Tip Calculator"
android:label="提示计算器"
or change your strings.xml
或更改您的 strings.xml
<string name="app_name">Tip Calculator</string>
<string name="hello_world">Hello world!</string>
<string name="menu_settings">Settings</string>
<string name="title_activity_main">Tip Calculator</string>
回答by ssrp
This is because android does not allow for two different labels for the app_name and main activity name. But in case you want to use two different labels at the same time you could accomplish it as follow;
这是因为 android 不允许 app_name 和主要活动名称有两个不同的标签。但如果你想同时使用两个不同的标签，你可以按如下方式完成；
The name for your App to be shown on app menu
要在应用菜单上显示的应用名称
<application> android:lable = "@string/app_name" </application>
And the different label when you launch the activity;
以及启动活动时的不同标签；
in your onCreate() method of the main activity put;
在主要活动的 onCreate() 方法中；
this.setTitle("Your Title for the Activity");
回答by eoghanm
Thats just an error in eclipse sometimes, close eclipse then clean your project and it should be fine
有时这只是 eclipse 中的一个错误，关闭 eclipse 然后清理你的项目，它应该没问题
