一大波静态方法

取本地assets目录下fonts路径下的字体资源

public static Typeface getTypeface(Context context) {
    Typeface face = Typeface.createFromAsset(context.getAssets(), "fonts/BOD_PSTC.TTF");
    return face;
}

新建一个popWindow

public static PopupWindow createPopWindow(Context context, int layoutId) {
    View view = LayoutInflater.from(context).inflate(layoutId, null);
    PopupWindow pop = new PopupWindow(view,
                ViewGroup.LayoutParams.WRAP_CONTENT,
                ViewGroup.LayoutParams.WRAP_CONTENT);
    pop.setOutsideTouchable(false);// 点击外部退出
    pop.setFocusable(true);
    pop.setBackgroundDrawable(new ColorDrawable(-00000));// 必须要这个，不然点击外部无效
    pop.update();
    return pop;
}

锁定EditText，使其不可点击聚焦。解锁EditText，使其可点击聚焦。

/**锁定EditText，使其不可点击聚焦*/
public static void lockEditText(EditText...edts) {
    if(edts == null) return;
    for(int i=0;i<edts.length;i++) {
        edts[i].setFocusableInTouchMode(false);
    }
}
    
/**解锁EditText，使其可点击聚焦*/
public static void unlockEditText(EditText...edts) {
    if(edts == null) return;
    for(int i=0;i<edts.length;i++) {
        edts[i].setFocusableInTouchMode(true);
    }
}

判断字符串是否为数字

/**判断字符串是否为数字----方式1,JAVA自带的函数*/
public static boolean isNumeric1(String str){
    for (int i = str.length();--i>=0;){   
        if (!Character.isDigit(str.charAt(i))){
            return false;
        }
    }
    return true;
}
    
/**判断字符串是否为数字----方式2,正则表达式*/
public static boolean isNumeric2(String str){ 
    Pattern pattern = Pattern.compile("[0-9]*"); 
    return pattern.matcher(str).matches();    
}
    
/**判断字符串是否为数字----方式3,ascii码*/
public static boolean isNumeric3(String str){
    for(int i=str.length();--i>=0;){
        int chr=str.charAt(i);
        if(chr<48 || chr>57)
            return false;
    }
    return true;
}

检测服务是否正在运行

public static boolean isServiceRunning(Context context, String serviceClassName){ 
    final ActivityManager activityManager = (ActivityManager)context.getApplicationContext().getSystemService(Context.ACTIVITY_SERVICE); 
    final List<RunningServiceInfo> services = activityManager.getRunningServices(Integer.MAX_VALUE); 
    for (RunningServiceInfo runningServiceInfo : services) { 
        if (runningServiceInfo.service.getClassName().equals(serviceClassName)){ 
            return true; 
        } 
    } 
    return false; 
}

判断ip是否有效

public static boolean isIpAddress(String ip) {
    if(isNumeric1(port)) {
        ip = ip.replace(" ", "");
        String[] subStrs = ip.split("\\.");
        if(subStrs.length == 4) {
            for(int i=0;i<4;i++)
                if(isNumeric1(subStrs[i])) {
                    int n = Integer.valueOf(subStrs[i]);
                    if(n < 0 && n > 255) return false;
                } else return false;　　　　 } else return false;
    }
    return true;
}

 

来源：https://www.cnblogs.com/swalka/p/4738177.html