The first solution
New version installation SDK The file starts with two XML file ,activity_main.xml and fragment_main.xml,
Those who are not used to it can be dealt with in this way ：
1. Delete fragment_main.xml The whole document
2. Yes activity_main.xml, Delete the contents . And then switch to Graphy Layout, Put one in LinearLayout Can
3. Yes MainActivity.java, You can delete part of the content , And then MainActivity extends ActionBarActivity Change it to MainActivity extends Activity ：
It's changed to read as follows ：
package com.zmcorp.weightcalculator;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.os.Build;
MainActivity extends Activity {
@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);
}
}
}
The second method ：：
myTextview,myButton Is in fragment_main.xml Medium , In the absence of introduction fragment_main.xml Before , You are through findViewById I can't find ..
public static class PlaceholderFragment extends Fragment {
public PlaceholderFragment() {
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_main, container,
false);
TextView textview = (TextView)rootView.findViewById(R.id.view);
System.out.println(textview);
testview.setText("Hello Android!");
return rootView;
}
}
About activity_main.xml And fragment_main.xml More articles about
- layout In the folder activity_main.xml And fragment_main.xml Records of document processing
androidSDK Update to 22.6 When you build a new project after layout There's... Under the folder activity_main.xml And fragment_main.xml, This is to use fragmentation in tablet development , But let people who don't need debris ...
- activity_main.xml And fragment_main.xml
see : http://blog.sina.com.cn/s/blog_3e28c8a50101fqvw.html http://blog.sina.com.cn/s/blog_3e28c8a50101f ...
- Andriod ADT v22.6.2 Version in Mainactivity.java Use in fragment_main.xml in TextView Control object
as everyone knows , We can be in activity_main.xml File control activity Medium view, You can also use java Code set..() How to control it . In the learning process , Found in ADT In the new version , It's different from the previous version ...
- Android in fragment_main.xml The problem of getting components in the file
package com.dhy.phonedial; import android.app.Activity; import android.app.Fragment; import android. ...
- Android On fragment_main.xml File problem component acquisition
package com.dhy.phonedial; import android.app.Activity; import android.app.Fragment; import android. ...
- Android Remove the new Android fragment_main.xml
In the new edition of ADT in , establish androidproject By default, two xml file --fragment_main and activity_main. I suggest that fragment_main Delete this file 1) take ...
- Maven actual combat ：pom.xml And settings.xml
pom.xml And settings.xml pom.xml And setting.xml, Can be said to be Maven The two most important configuration files in , To determine the Maven Core functions , Although the previous articles mentioned it piecemeal pom.xml and s ...
- according to xml File name get xml Data and transform it into entities .
1. Define a xml file . <?xml version="1.0" encoding="utf-8" ?> <UserManager xmlns ...
- Why? applicationContext.xml and spring-servlet.xml There's annotation filtering in all of them <context:component-scan base-package="myproject"> and <context:component-scan base-package="myproject.controller" />
In the study SpringMVC When the framework is integrated , You may wonder why Spring.xml and SpringMVC.xml There's annotation filtering in all of them . <context:component-scan base-packa ...
Random recommendation
- [ACM_ Dynamic programming ] Nested rectangles
Problem description : Yes n Matrix , Each matrix can use two integers a,b To express , It means his length and width , matrix X (a,b) Sure nesting To Y (c,d) Inside if and only if a < c && b < d ...
- wangEditor—— Lightweight web Rich text box
wangEditor—— Lightweight web Rich text editor See :wangEditor.github.io perhaps https://github.com/wangfupeng1988/wangEditor hand over ...
- MyEclipse in SVN How to use
Reprinted from ----- Sina blog MyEclipse Medium SVN Operation manual 1. Import the project Click on the toolbar [File-Import], Enter the figure below
- JvisualVM、JMC Monitoring remote servers
Modify the server jmxremote.access And jmxremote.password, Enter the command : find -name jmxremote.access Access to the jmxremote.access File directory ...
- Mainstream page editors ：TinyMCE VS FCKeditor
First used in development is FCKeditor Editor , I feel that the things displayed on the page are too cumbersome , So I changed it TinyMCE Editor . For ease of understanding , This paper does not use interspersed comparison First look at FCKeditor : 1.jsp : The end tag cannot be attached ...
- Starting from scratch, wechat small program development
Preface : ha-ha , I found that all my essays were project driven . Of course , This is also project driven , Some time ago, when playing wechat, leaders found the benefits of wechat app , technological process , Fast switching speed, etc , Then let me study the implementation of small programs . Under the supplement , Blogs mostly deal with ...
- OminiMarkupPreview Shortcut key
The default key bindings: Windows, Linux: Ctrl+Alt+O: Preview Markup in Browser. Ctrl+Alt+X: Export ...
- BZOJ 1041: [HAOI2008] The whole point on the circle 【 number theory , solve equations 】
1041: [HAOI2008] The whole point on the circle Time Limit: 10 Sec Memory Limit: 162 MBSubmit: 4210 Solved: 1908[Submit][Sta ...
- vue-- Animation shrinks
First install vuex establish store Folder stay store The folders are created separately state.js // State management // Definition state Raw data const state = { fullScre ...
- HDU4278
Faulty Odometer Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others)T ...