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/*
* use modulo operator to implement loops
*/ 
public class Loop {
    // index
    private static int index;

    // a objects array
    private static obj[] mObjs = new obj[]{
    new obj(0),

rosuH

/**
 * All activity data would be destoryed after the device rotate
 * So we need save the data first and recall it after the device rotate
 */

 public class MainActiviy extends AppCompatActivity {
     // example key variable
     private static final String KEY_INDEX = "index";

     // example data variable

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<?xml version="1.0" encoding="utf-8" ?>
<LinearLayout 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:orientation="vertical"
              tools:context="com.example.PreviewLayoutActivity">
    <TextView
        android:id="@+id/answer_text_view"
        android:layout_width="wrap_content"

rosuH

/**
 * public name: SendActivity
 * comment: start activity(using intent) by calling static final method instead of creating one by itself.
 */
public class SendActivity extends AppCompatActivity{
    ...
    //Start Receiver Activity
    boolean exampleKey = someFunToGetExampleKey();
    Intent intent = ReceiveActivity.newIntent(SendActivity.this, exampleKey);
    startActivity(intent);

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#!/bin/bash
var="$1"
xdg-open $(locate $var) > 2&

rosuH

accerciser
adobe-source-code-pro-fonts
adobe-source-han-sans-cn-fonts
adobe-source-han-serif-cn-fonts
adwaita-icon-theme
aisleriot
alsa-utils
android-studio
anjuta
archlinuxcn-keyring

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// global search REGEX
String regex="[^\\u4e00-\\u9fa5\\w]";
Pattern pattern = Pattern.compile(regex);
Matcher matcher = pattern.matcher(data);
data = matcher.replaceAll("");

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@Override
    protected void onDestroy() {
        if(mWebView !=null ){
            mWebView.loadDataWithBaseURL(null, "", "text/html",
                    "utf-8", null);
            ((ViewGroup)mWebView.getParent()).removeView(mWebView);
            mWebView.destroy();
            mWebView = null;
        }
        super.onDestroy();

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import java.util.Random;

public class Main {
    public static void main(String[] args){
        B b = new B();
        System.out.println("-----");
        B bB = new B(12);
    }
}

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public class MyFregment extends Fregment {
  private static final int REQUEST_PHOTO = 2;
  
  @Override
  public View onCreateView(layoutflater inflater, ViewGroup container, Bundle savedinstanceState) {
    mPhotoButton = (imageButton) v.findViewById(R.id.camera);
    // 默认只能拍出低分辨率图片
    // 要想获得全尺寸照片，要让它使用文件系统存储图片
    // 需要传入保存在 MediaStore.EXTRA_OUTPUT 中的 Uri，该 Uri 会指向 FileProvider 提供的位置
    final Intent captureImage = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);