Android实战技巧：为从右向左语言定义复杂字串,代码和xml设置

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代码方式,一般是放在一个Utils.java作为公共方法

    /// add by xxx.zhou for ArabicRTL support 20141024 begin    public static boolean isContainEG_IR(String str) {        if (str == null || str == "")            return false;        String rtl[] = new String[4];        rtl[0] = "[\u0600-\u06ff]"; // Arbic        rtl[1] = "[\u0750-\u077f]"; // Arbic Supplement        rtl[2] = "[\ufb50-\ufdff]"; // Arabic PresentationForms A        rtl[3] = "[\ufe70-\ufeff]"; // Arabic PresentationForms B        boolean isContained = false;        for (String s : rtl) {            Pattern p = Pattern.compile(s);            Matcher m = p.matcher(str);            if (m.find()) {                isContained = true;                break; // I've found out contain arabic and returns            }        }        return isContained;    }    //判断是否是一个号码，常用    public static boolean isPurePhoneNumber(String str) {        if (str == null)            return false; // allan add        char chs[] = str.toCharArray();        boolean flag = true;        for (char c : chs) {            if (c != '+' && !(c >= '0' && c <= '9') && c != '*' && c != ' '                    && c != ',') {                flag = false;                break;            }        }        return flag;    }   //设置文字的显示方向，一般此方法前判断一下isPurePhoneNumber（）    public static String ChangeTextForRTL(String orgin, int type) {        // phone is RTL suport        if (type == 1) {            return '\u202D' + orgin + '\u202C';        } else {            return '\u202A' + orgin + '\u202C';        }    }    public static void SetTextDIRECTION(CharSequence temp, TextView showtextview) {        if (showtextview == null)            return;        String tempstrings = temp.toString();        if (!tempstrings.equals("")) {            boolean iscontain = isContainEG_IR(tempstrings);            if (iscontain) {                boolean isfirst = isFirstCharEnglish(tempstrings);                if (isfirst) {                    showtextview.setTextDirection(android.view.View.TEXT_DIRECTION_LTR);                } else {                    showtextview.setTextDirection(android.view.View.TEXT_DIRECTION_RTL);                }            } else {                showtextview.setTextDirection(android.view.View.TEXT_DIRECTION_LTR);            }        } else {            if (isLanguageEnvRTL()) {                showtextview.setTextDirection(android.view.View.TEXT_DIRECTION_RTL);            } else {                showtextview.setTextDirection(android.view.View.TEXT_DIRECTION_LTR);            }        }    }    public static boolean isLanguageEnvRTL() {        java.util.Locale l = java.util.Locale.getDefault();        String language = l.getLanguage();        if (language.equals("ar") || language.equals("iw") || language.equals("fa")) {            return true;        }        return false;    }    public static boolean isFirstCharEnglish(String str) {        char chs[] = str.toCharArray();        char c = ' ';        for (int i = 0; i < chs.length; i++) {            if (chs[i] != ' ') {                c = chs[i];                break;            }        }        if ((c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z')) {            return true;        }        return false;    }    /// add by xxx.zhou for ArabicRTL support 20141024 end    //add by xxx.li for PR884764 20150122 START    public static boolean isRuLanguage(Context context){        boolean mIsRussian = "ru".equals(context.getResources().getConfiguration().locale.getLanguage());        boolean mIsLastMatch = SystemProperties.getBoolean("ro.def.TelephonyProvider.match", false);        return mIsRussian && mIsLastMatch;    }    public static int getConfigPhnumMinMatch(){        int mMinMatch = Integer.valueOf(SystemProperties.get("ro_config_phnum_significant_len", "7"));        return mMinMatch;    }    //add by xxx.li for PR884764 20150122 END

xml设置
1、strings.xml

 <!-- file values-ar/strings.xml -->    <string name="send_msg_to">استورد\u202d%s\u202cتور</string>    <string name="send_msg_to">\u200fsend <xliff:g id="number">\u200f%1$d</xliff:g>استورد</string>

2、布局文件TextView
1. 在你的应用程序声明文件（manifest）里声明开启RTL mirroring的支持。具体做法是：在manifest.xml声明文件的元素中，添加 android:supportsRtl=”true”

修改应用程序中所有的“left/right”布局属性，改为对应的”start/end”布局

1）如果你的应用程序是针对Android 4.2目标平台（应用的targetSdkVersion或者minSdkVersion是17或者更高), 那么你就应当用“start”和“end”替换原来的“left”和“right”。例如，android:paddingLeft应当被替换为android:paddingStart。

2) 如果你想让你的应用程序与Android 4.2之前的版本保持兼容（也就是与targetSdkVersion或者minSdkVersion为16或者更早的版本），那么你应当既加上“start”和“end”，又加上“left”和“right”。例如，你应当同时写上：adnroid:paddingLeft和android:paddingStart。

        <!--[BUGFIX]-Mod-BEGIN by (xxx.deng),10/27/2015,1103440, -->        <!--Arabic support,add android:textDirection="ltr" -->        <EditText            android:id="@+id/edit_container"            android:layout_width="0dip"            android:layout_height="wrap_content"            android:textDirection="ltr" />        <!--[BUGFIX]-Mod-END by (xxx),1103440.-->

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