常用的OC函数工具

博主： DamonHu
发布时间：2017 年 04 月 26 日
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分类： iOS开发

一、判断NSString中的字符是否为中文

在Unicode编码的NSString中，如何遍历字符串中的汉字呢？网上查了很多方法，几乎都是这一种：

unichar ch = [string characterAtIndex:i];  
if (0x4e00 < ch  && ch < 0x9fff)  
{  
    //含有中文 
}

这样的确可以判断大多数中文符号，但是少数字符比如句号“。”在unichar存储的16进制值要小于0x4e00，查了很多资料试了很多例子发现只有这样判断才是正确的：

unichar ch = [string characterAtIndex:i];  
if ((int)(ch)>127)  
{  
    //含有中文 
}
else if((ch >64)&&(ch <91)){
    NSLog(@"字符串中含有大写英文字母");
}else if((ch >96)&&( ch<123)){
    NSLog(@"字符串中含有小写英文字母");
}else if((ch>47)&&(ch<58)){
    NSLog(@"字符串中含有数字");
}else{
    NSLog(@"字符串中含有非法字符");
}

二、获取软件包名Bundle Identifier

///软件包名Bundle Identifier
-(NSString*)getBundleIdentifier
{
    return [[NSBundle mainBundle] bundleIdentifier];
}

三、ios系统版本

-(NSString*)getIOSVersion
{
    return [[UIDevice currentDevice] systemVersion];
}

四、APP软件版本

-(NSString*)getAppVersion
{
    NSString *version = [[[NSBundle mainBundle] infoDictionary] objectForKey:(NSString *)@"CFBundleShortVersionString"];
    return version;
}

五、APP软件build版本

-(NSString*)getAppBuildVersion
{
    NSString *buildVersion = [[[NSBundle mainBundle] infoDictionary] objectForKey:(NSString*)@"CFBundleVersion"];
    return buildVersion;
}

六、将字典或者数组转化为Json Data数据

- (NSData *)toJSONData:(id)theData{
    NSError *error = nil;
    NSData *jsonData = [NSJSONSerialization dataWithJSONObject:theData options:NSJSONWritingPrettyPrinted error:&error];
    if ([jsonData length] > 0 && error == nil){
        return jsonData;
    }else{
        return nil;
    }
}

七、将Json Data转化为字典或者数组

// 将JSONDATA转化为字典或者数组
- (id)DataToArrayOrNSDictionary:(NSData *)jsonData{
    NSError *error = nil;
    id jsonObject = [NSJSONSerialization JSONObjectWithData:jsonData options:NSJSONReadingAllowFragments error:&error];
    if (jsonObject != nil && error == nil){
        return jsonObject;
    }else{
        // 解析错误
        return nil;
    }
}

八、将字典或者数组转化为json字符串数据

- (NSString *)toJSONStr:(id)theData
{
    NSData *jsonData = [self toJSONData:theData];
    NSString *jsonString = [[NSString alloc] initWithData:jsonData encoding:NSUTF8StringEncoding];
    return jsonString;
}

九、将JSON串转化为字典或者数组

- (id)StrToArrayOrNSDictionary:(NSString *)jsonStr
{
    NSData *jsonData = [jsonStr dataUsingEncoding:NSUTF8StringEncoding];
    return [self DataToArrayOrNSDictionary:jsonData];
}

十、NSArray转为NSString

-(NSString*)ArrayToString:(NSArray*)array
{
    return [array componentsJoinedByString:@","];
}

十一、NSString转为NSArray

-(NSArray*)StringToArray:(NSString*)str
{
    return [str componentsSeparatedByString:@","];
}

十二、unicode转换为中文

-(NSString*)convertUnicodeString:(NSString*)unicodeStr
{
    NSString *tempStr1 = [unicodeStr stringByReplacingOccurrencesOfString:@"\\u" withString:@"\\U"];
    NSString *tempStr2 = [tempStr1 stringByReplacingOccurrencesOfString:@"\"" withString:@"\\\""];
    NSString *tempStr3 = [[@"\"" stringByAppendingString:tempStr2] stringByAppendingString:@"\""];
    NSData *tempData = [tempStr3 dataUsingEncoding:NSUTF8StringEncoding];
    NSString* returnStr = [NSPropertyListSerialization propertyListFromData:tempData
                                                           mutabilityOption:NSPropertyListImmutable
                                                                     format:NULL
                                                           errorDescription:NULL];
    return [returnStr stringByReplacingOccurrencesOfString:@"\\r\\n" withString:@"\n"];
}

十三、从文件获取json内容

-(id)getJsonDataFromFileName:(NSString*)jsonName
{
    NSString *jsonPath = [[NSBundle mainBundle] pathForResource:jsonName ofType:@"json"];
    NSData *data = [NSData dataWithContentsOfFile:jsonPath];
    id result = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingAllowFragments error:nil];
    return result;
}

十四、将UIImage内容写入本地保存，返回保存过的路径

-(NSString*)savedImagePathWithUIImage:(UIImage*)img WithFileName:(NSString*)fileName
{
    //压缩
//    NSData *imagedata = UIImagePNGRepresentation(img);
    NSData *imagedata = UIImageJPEGRepresentation(img, 0.7);
    NSArray*paths=NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,NSUserDomainMask,YES);
    NSString *documentsDirectory=[paths objectAtIndex:0];
    NSString *savedImagePath=[documentsDirectory stringByAppendingPathComponent:fileName];
    [imagedata writeToFile:savedImagePath atomically:YES];
    return savedImagePath;
}

十五、将Data内容写入本地保存，重新命名，返回保存过的路径

-(NSString*)savedPathWithData:(NSData*)data WithFileName:(NSString*)fileName
{
    NSArray*paths=NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,NSUserDomainMask,YES);
    NSString *documentsDirectory=[paths objectAtIndex:0];
    NSString *savedImagePath=[documentsDirectory stringByAppendingPathComponent:fileName];
    [data writeToFile:savedImagePath atomically:YES];
    return savedImagePath;
}

十六、MD5加密

-(NSString*)getMD5withStr:(NSString*)str
{
    const char *cStr = [str UTF8String];
    unsigned char result[16];
    CC_MD5( cStr, (CC_LONG)strlen(cStr), result );
    return [[NSString stringWithFormat:
            @"%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X",
            result[0], result[1], result[2], result[3],
            result[4], result[5], result[6], result[7],
            result[8], result[9], result[10], result[11],
            result[12], result[13], result[14], result[15]
            ] lowercaseString];
}

十七、获取时间戳

-(NSString*)getTimeStamp
{
    return [NSString stringWithFormat:@"%.0f",[[NSDate date] timeIntervalSince1970]];
}

十八、获取视频指定第几秒的截图

-(UIImage*)getVideoPreViewImageFromVideoPath:(NSString*)videoPath withAtTime:(float)atTime
{
    AVURLAsset *asset = [[AVURLAsset alloc] initWithURL:[NSURL fileURLWithPath:videoPath] options:nil];
    AVAssetImageGenerator *gen = [[AVAssetImageGenerator alloc] initWithAsset:asset];
    gen.appliesPreferredTrackTransform = YES;
    gen.requestedTimeToleranceAfter = kCMTimeZero;
    gen.requestedTimeToleranceBefore = kCMTimeZero;
    CMTime time = CMTimeMakeWithSeconds(atTime, 600);
    NSError *error = nil;
    CMTime actualTime;
    CGImageRef image = [gen copyCGImageAtTime:time actualTime:&actualTime error:&error];
    UIImage *img = [[UIImage alloc] initWithCGImage:image];
    UIGraphicsBeginImageContext(CGSizeMake(JLXScreenSize.width, JLXScreenSize.height));
    [img drawInRect:CGRectMake(0, 0, JLXScreenSize.width, JLXScreenSize.height)];
    UIImage *scaledImage = UIGraphicsGetImageFromCurrentImageContext();
    UIGraphicsEndImageContext();
    CGImageRelease(image);
    return scaledImage;
}

十九、获取本地视频的时长

-(NSUInteger)durationWithVideo:(NSString *)videoPath
{
    NSDictionary *opts = [NSDictionary dictionaryWithObject:@(NO) forKey:AVURLAssetPreferPreciseDurationAndTimingKey];
    AVURLAsset *urlAsset = [AVURLAsset URLAssetWithURL:[NSURL fileURLWithPath:videoPath] options:opts];     //初始化视频媒体文件
    NSUInteger second = 0;
    second = urlAsset.duration.value / urlAsset.duration.timescale; // 获取视频总时长,单位秒

    return second;
}

二十、是否是平板

-(BOOL)isPad
{
    return [[UIDevice currentDevice].model isEqualToString:@"iPad"];
}

二十一、是否有麦克风权限

typedef enum : NSUInteger {
    JLXAuthorized = 1,  //用户允许
    JLXDenied,          //用户拒绝
    JLXNotDetermined,   //用户尚未选择
} JLXPrivate;

-(JLXPrivate)hasAVMediaTypeAudio
{
    AVAuthorizationStatus status = [AVCaptureDevice authorizationStatusForMediaType:AVMediaTypeAudio];
    if (status == AVAuthorizationStatusAuthorized){
        return JLXAuthorized;
    }
    else if (status == AVAuthorizationStatusNotDetermined){
        return JLXNotDetermined;
    }
    else{
        return JLXDenied;
    }
}

二十二、是否有拍照权限

-(JLXPrivate)hasAVMediaTypeVideo
{
    AVAuthorizationStatus status = [AVCaptureDevice authorizationStatusForMediaType:AVMediaTypeVideo];
    if (status == AVAuthorizationStatusAuthorized){
        return JLXAuthorized;
    }
    else if (status == AVAuthorizationStatusNotDetermined){
        return JLXNotDetermined;
    }
    else{
        return JLXDenied;
    }
}

二十三、是否有相册权限

-(JLXPrivate)hasPhotoLibrary
{
    PHAuthorizationStatus status=[PHPhotoLibrary authorizationStatus];
    if (status == PHAuthorizationStatusAuthorized){
        return JLXAuthorized;
    }
    else if (status == PHAuthorizationStatusNotDetermined){
        return JLXNotDetermined;
    }
    else{
        return JLXDenied;
    }
    
}

二十四、申请麦克风权限

-(void)getAVMediaTypeAudio
{
    [AVCaptureDevice requestAccessForMediaType:AVMediaTypeVideo completionHandler:^(BOOL granted) {
        
    }];
}

二十五、申请拍照权限

-(void)getAVMediaTypeVideo
{
    [AVCaptureDevice requestAccessForMediaType:AVMediaTypeAudio completionHandler:^(BOOL granted) {
       
    }];
}

二十六、申请相册权限

-(void)getPhotoLibrary
{
    [PHPhotoLibrary requestAuthorization:^(PHAuthorizationStatus status) {
    }];
}

二十七、打开系统设置

-(void)openSetting
{
    NSURL *settingUrl = [NSURL URLWithString:UIApplicationOpenSettingsURLString];
    if ([[UIApplication sharedApplication] canOpenURL:settingUrl]) {
        [[UIApplication sharedApplication] openURL:settingUrl];
    }
}

参考文章：

版权属于：东哥笔记 - DongGe.org
本文链接：https://dongge.org/blog/537.html
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最后修改：2017 年 05 月 05 日

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常用的OC函数工具

DamonHu • 2017 年 04 月 26 日

<h2>一、判断NSString中的字符是否为中文</h2><p>在Unicode编码的NSString中，如何遍历字符串中的汉字呢？网上查了很多方法，几乎都是这一种：</p><pre><code>unichar ch = [string characterAtIndex:i];  
if (0x4e00 &lt; ch  &amp;&amp; ch &lt; 0x9fff)  
{  
    //含有中文 
}  </code></pre><p>这样的确可以判断大多数中文符号，但是少数字符比如句号“。”在unichar存储的16进制值要小于0x4e00，查了很多资料试了很多例子发现只有这样判断才是正确的：</p><pre><code>unichar ch = [string characterAtIndex:i];  
if ((int)(ch)&gt;127)  
{  
    //含有中文 
}
else if((ch &gt;64)&amp;&amp;(ch &lt;91)){
    NSLog(@&quot;字符串中含有大写英文字母&quot;);
}else if((ch &gt;96)&amp;&amp;( ch&lt;123)){
    NSLog(@&quot;字符串中含有小写英文字母&quot;);
}else if((ch&gt;47)&amp;&amp;(ch&lt;58)){
    NSLog(@&quot;字符串中含有数字&quot;);
}else{
    NSLog(@&quot;字符串中含有非法字符&quot;);
}</code></pre><h2>二、获取软件包名Bundle Identifier</h2><pre><code>///软件包名Bundle Identifier
-(NSString*)getBundleIdentifier
{
    return [[NSBundle mainBundle] bundleIdentifier];
}</code></pre><h2>三、ios系统版本</h2><pre><code>-(NSString*)getIOSVersion
{
    return [[UIDevice currentDevice] systemVersion];
}</code></pre><h2>四、APP软件版本</h2><pre><code>-(NSString*)getAppVersion
{
    NSString *version = [[[NSBundle mainBundle] infoDictionary] objectForKey:(NSString *)@&quot;CFBundleShortVersionString&quot;];
    return version;
}</code></pre><h2>五、APP软件build版本</h2><pre><code>-(NSString*)getAppBuildVersion
{
    NSString *buildVersion = [[[NSBundle mainBundle] infoDictionary] objectForKey:(NSString*)@&quot;CFBundleVersion&quot;];
    return buildVersion;
}</code></pre><h2>六、将字典或者数组转化为Json Data数据</h2><pre><code>- (NSData *)toJSONData:(id)theData{
    NSError *error = nil;
    NSData *jsonData = [NSJSONSerialization dataWithJSONObject:theData options:NSJSONWritingPrettyPrinted error:&amp;error];
    if ([jsonData length] &gt; 0 &amp;&amp; error == nil){
        return jsonData;
    }else{
        return nil;
    }
}</code></pre><h2>七、将Json Data转化为字典或者数组</h2><pre><code>// 将JSONDATA转化为字典或者数组
- (id)DataToArrayOrNSDictionary:(NSData *)jsonData{
    NSError *error = nil;
    id jsonObject = [NSJSONSerialization JSONObjectWithData:jsonData options:NSJSONReadingAllowFragments error:&amp;error];
    if (jsonObject != nil &amp;&amp; error == nil){
        return jsonObject;
    }else{
        // 解析错误
        return nil;
    }
}</code></pre><h2>八、将字典或者数组转化为json字符串数据</h2><pre><code>- (NSString *)toJSONStr:(id)theData
{
    NSData *jsonData = [self toJSONData:theData];
    NSString *jsonString = [[NSString alloc] initWithData:jsonData encoding:NSUTF8StringEncoding];
    return jsonString;
}</code></pre><h2>九、将JSON串转化为字典或者数组</h2><pre><code>- (id)StrToArrayOrNSDictionary:(NSString *)jsonStr
{
    NSData *jsonData = [jsonStr dataUsingEncoding:NSUTF8StringEncoding];
    return [self DataToArrayOrNSDictionary:jsonData];
}</code></pre><h2>十、NSArray转为NSString</h2><pre><code>-(NSString*)ArrayToString:(NSArray*)array
{
    return [array componentsJoinedByString:@&quot;,&quot;];
}</code></pre><h2>十一、NSString转为NSArray</h2><pre><code>-(NSArray*)StringToArray:(NSString*)str
{
    return [str componentsSeparatedByString:@&quot;,&quot;];
}</code></pre><h2>十二、unicode转换为中文</h2><pre><code>-(NSString*)convertUnicodeString:(NSString*)unicodeStr
{
    NSString *tempStr1 = [unicodeStr stringByReplacingOccurrencesOfString:@&quot;\\u&quot; withString:@&quot;\\U&quot;];
    NSString *tempStr2 = [tempStr1 stringByReplacingOccurrencesOfString:@&quot;\&quot;&quot; withString:@&quot;\\\&quot;&quot;];
    NSString *tempStr3 = [[@&quot;\&quot;&quot; stringByAppendingString:tempStr2] stringByAppendingString:@&quot;\&quot;&quot;];
    NSData *tempData = [tempStr3 dataUsingEncoding:NSUTF8StringEncoding];
    NSString* returnStr = [NSPropertyListSerialization propertyListFromData:tempData
                                                           mutabilityOption:NSPropertyListImmutable
                                                                     format:NULL
                                                           errorDescription:NULL];
    return [returnStr stringByReplacingOccurrencesOfString:@&quot;\\r\\n&quot; withString:@&quot;\n&quot;];
}</code></pre><h2>十三、从文件获取json内容</h2><pre><code>-(id)getJsonDataFromFileName:(NSString*)jsonName
{
    NSString *jsonPath = [[NSBundle mainBundle] pathForResource:jsonName ofType:@&quot;json&quot;];
    NSData *data = [NSData dataWithContentsOfFile:jsonPath];
    id result = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingAllowFragments error:nil];
    return result;
}</code></pre><h2>十四、将UIImage内容写入本地保存，返回保存过的路径</h2><pre><code>-(NSString*)savedImagePathWithUIImage:(UIImage*)img WithFileName:(NSString*)fileName
{
    //压缩
//    NSData *imagedata = UIImagePNGRepresentation(img);
    NSData *imagedata = UIImageJPEGRepresentation(img, 0.7);
    NSArray*paths=NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,NSUserDomainMask,YES);
    NSString *documentsDirectory=[paths objectAtIndex:0];
    NSString *savedImagePath=[documentsDirectory stringByAppendingPathComponent:fileName];
    [imagedata writeToFile:savedImagePath atomically:YES];
    return savedImagePath;
}</code></pre><h2>十五、将Data内容写入本地保存，重新命名，返回保存过的路径</h2><pre><code>-(NSString*)savedPathWithData:(NSData*)data WithFileName:(NSString*)fileName
{
    NSArray*paths=NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,NSUserDomainMask,YES);
    NSString *documentsDirectory=[paths objectAtIndex:0];
    NSString *savedImagePath=[documentsDirectory stringByAppendingPathComponent:fileName];
    [data writeToFile:savedImagePath atomically:YES];
    return savedImagePath;
}</code></pre><h2>十六、MD5加密</h2><pre><code>-(NSString*)getMD5withStr:(NSString*)str
{
    const char *cStr = [str UTF8String];
    unsigned char result[16];
    CC_MD5( cStr, (CC_LONG)strlen(cStr), result );
    return [[NSString stringWithFormat:
            @&quot;%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X&quot;,
            result[0], result[1], result[2], result[3],
            result[4], result[5], result[6], result[7],
            result[8], result[9], result[10], result[11],
            result[12], result[13], result[14], result[15]
            ] lowercaseString];
}</code></pre><h2>十七、获取时间戳</h2><pre><code>-(NSString*)getTimeStamp
{
    return [NSString stringWithFormat:@&quot;%.0f&quot;,[[NSDate date] timeIntervalSince1970]];
}</code></pre><h2>十八、获取视频指定第几秒的截图</h2><pre><code>-(UIImage*)getVideoPreViewImageFromVideoPath:(NSString*)videoPath withAtTime:(float)atTime
{
    AVURLAsset *asset = [[AVURLAsset alloc] initWithURL:[NSURL fileURLWithPath:videoPath] options:nil];
    AVAssetImageGenerator *gen = [[AVAssetImageGenerator alloc] initWithAsset:asset];
    gen.appliesPreferredTrackTransform = YES;
    gen.requestedTimeToleranceAfter = kCMTimeZero;
    gen.requestedTimeToleranceBefore = kCMTimeZero;
    CMTime time = CMTimeMakeWithSeconds(atTime, 600);
    NSError *error = nil;
    CMTime actualTime;
    CGImageRef image = [gen copyCGImageAtTime:time actualTime:&amp;actualTime error:&amp;error];
    UIImage *img = [[UIImage alloc] initWithCGImage:image];
    UIGraphicsBeginImageContext(CGSizeMake(JLXScreenSize.width, JLXScreenSize.height));
    [img drawInRect:CGRectMake(0, 0, JLXScreenSize.width, JLXScreenSize.height)];
    UIImage *scaledImage = UIGraphicsGetImageFromCurrentImageContext();
    UIGraphicsEndImageContext();
    CGImageRelease(image);
    return scaledImage;
}</code></pre><h2>十九、获取本地视频的时长</h2><pre><code>-(NSUInteger)durationWithVideo:(NSString *)videoPath
{
    NSDictionary *opts = [NSDictionary dictionaryWithObject:@(NO) forKey:AVURLAssetPreferPreciseDurationAndTimingKey];
    AVURLAsset *urlAsset = [AVURLAsset URLAssetWithURL:[NSURL fileURLWithPath:videoPath] options:opts];     //初始化视频媒体文件
    NSUInteger second = 0;
    second = urlAsset.duration.value / urlAsset.duration.timescale; // 获取视频总时长,单位秒

return second;
}</code></pre><h2>二十、是否是平板</h2><pre><code>-(BOOL)isPad
{
    return [[UIDevice currentDevice].model isEqualToString:@&quot;iPad&quot;];
}</code></pre><h2>二十一、是否有麦克风权限</h2><pre><code>typedef enum : NSUInteger {
    JLXAuthorized = 1,  //用户允许
    JLXDenied,          //用户拒绝
    JLXNotDetermined,   //用户尚未选择
} JLXPrivate;</code></pre><pre><code>-(JLXPrivate)hasAVMediaTypeAudio
{
    AVAuthorizationStatus status = [AVCaptureDevice authorizationStatusForMediaType:AVMediaTypeAudio];
    if (status == AVAuthorizationStatusAuthorized){
        return JLXAuthorized;
    }
    else if (status == AVAuthorizationStatusNotDetermined){
        return JLXNotDetermined;
    }
    else{
        return JLXDenied;
    }
}</code></pre><h2>二十二、是否有拍照权限</h2><pre><code>-(JLXPrivate)hasAVMediaTypeVideo
{
    AVAuthorizationStatus status = [AVCaptureDevice authorizationStatusForMediaType:AVMediaTypeVideo];
    if (status == AVAuthorizationStatusAuthorized){
        return JLXAuthorized;
    }
    else if (status == AVAuthorizationStatusNotDetermined){
        return JLXNotDetermined;
    }
    else{
        return JLXDenied;
    }
}</code></pre><h2>二十三、是否有相册权限</h2><pre><code>-(JLXPrivate)hasPhotoLibrary
{
    PHAuthorizationStatus status=[PHPhotoLibrary authorizationStatus];
    if (status == PHAuthorizationStatusAuthorized){
        return JLXAuthorized;
    }
    else if (status == PHAuthorizationStatusNotDetermined){
        return JLXNotDetermined;
    }
    else{
        return JLXDenied;
    }
    
}</code></pre><h2>二十四、申请麦克风权限</h2><pre><code>-(void)getAVMediaTypeAudio
{
    [AVCaptureDevice requestAccessForMediaType:AVMediaTypeVideo completionHandler:^(BOOL granted) {
        
    }];
}</code></pre><h2>二十五、申请拍照权限</h2><pre><code>-(void)getAVMediaTypeVideo
{
    [AVCaptureDevice requestAccessForMediaType:AVMediaTypeAudio completionHandler:^(BOOL granted) {
       
    }];
}</code></pre><h2>二十六、申请相册权限</h2><pre><code>-(void)getPhotoLibrary
{
    [PHPhotoLibrary requestAuthorization:^(PHAuthorizationStatus status) {
    }];
}</code></pre><h2>二十七、打开系统设置</h2><pre><code>-(void)openSetting
{
    NSURL *settingUrl = [NSURL URLWithString:UIApplicationOpenSettingsURLString];
    if ([[UIApplication sharedApplication] canOpenURL:settingUrl]) {
        [[UIApplication sharedApplication] openURL:settingUrl];
    }
}</code></pre><h2>参考文章：</h2><ul><li><a href="http://blog.csdn.net/detecyang/article/details/8707610" target="_blank">【iOS开发】判断NSString中的字符是否为中文的正确方法</a></li><li><a href="http://blog.csdn.net/like7xiaoben/article/details/9001806" target="_blank">IOS成长之路-使用系统默认声音、震动</a></li><li><a href="http://www.jianshu.com/p/a50f9f4480fa" target="_blank">iOS音频播放(系统音效播放)</a></li><li><a href="http://blog.csdn.net/chenmoji/article/details/21400807" target="_blank">获取相机、麦克风、通讯录权限，确认是否拥有这些权限</a></li></ul><hr class="content-copyright" style="margin-top:50px" /><blockquote class="content-copyright" style="font-style:normal"><p class="content-copyright">版权属于：东哥笔记 - DongGe.org</p><p class="content-copyright">本文链接：<a class="content-copyright" href="https://dongge.org/blog/537.html">https://dongge.org/blog/537.html</a></p><p class="content-copyright">自2017年12月26日起，『转载以及大段采集进行后续编辑』须注明本文标题和链接！否则禁止所有转载和采集行为！</p></blockquote>

一、判断NSString中的字符是否为中文

二、获取软件包名Bundle Identifier

三、ios系统版本

四、APP软件版本

五、APP软件build版本

六、将字典或者数组转化为Json Data数据

七、将Json Data转化为字典或者数组

八、将字典或者数组转化为json字符串数据

九、将JSON串转化为字典或者数组

十、NSArray转为NSString

十一、NSString转为NSArray

十二、unicode转换为中文

十三、从文件获取json内容

十四、将UIImage内容写入本地保存，返回保存过的路径

十五、将Data内容写入本地保存，重新命名，返回保存过的路径

十六、MD5加密

十七、获取时间戳

十八、获取视频指定第几秒的截图

十九、获取本地视频的时长

二十、是否是平板

二十一、是否有麦克风权限

二十二、是否有拍照权限

二十三、是否有相册权限

二十四、申请麦克风权限

二十五、申请拍照权限

二十六、申请相册权限

二十七、打开系统设置

参考文章：

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常用的OC函数工具

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