MaximAlien

CGFloat h = (arc4random() % 128 / 256.0) + 0.5;
CGFloat s = (arc4random() % 128 / 256.0) + 0.5;
CGFloat b = (arc4random() % 128 / 256.0) + 0.5;
UIColor *color = [UIColor colorWithHue:h saturation:s brightness:b alpha:1.0f];

MaximAlien

@interface UIColor (Hex)

+ (CGFloat)colorComponentFrom:(NSString *)string start:(NSUInteger)start length:(NSUInteger)length;

@end

@implementation UIColor (Hex)

+ (UIColor *)colorWithHexString:(NSString *)hex
{

MaximAlien

static std::string getClassName(JNIEnv *env, jobject entity, jclass clazz)
{
    jmethodID mid = env->GetMethodID(clazz, "getClass", "()Ljava/lang/Class;");
    jobject clsObj = env->CallObjectMethod(entity, mid);
    jclass clazzz = env->GetObjectClass(clsObj);
    mid = env->GetMethodID(clazzz, "getName", "()Ljava/lang/String;");
    jstring strObj = (jstring)env->CallObjectMethod(clsObj, mid);

    const char* str = env->GetStringUTFChars(strObj, NULL);
    std::string res(str);

MaximAlien

JNIEXPORT void JNICALL method_name
(JNIEnv *env, jobject obj, jstring jstr)
{
    const char* ch = env->GetStringUTFChars(jstr, 0);

    env->ReleaseStringUTFChars(jstr, ch);
}

MaximAlien

iPhone 6 Plus (@3x) - 75 x 75
iPhone 6 and iPhone 5 (@2x) - 50 x 50
iPhone 4s (@2x) - 50 x 50
iPad and iPad mini (@2x) - 50 x 50
iPad 2 and iPad mini (@1x) - 25 x 25

MaximAlien

for (NSString* family in [UIFont familyNames])
{
    NSLog(@"%@", family);
        
    for (NSString* name in [UIFont fontNamesForFamilyName:family])
    {
        NSLog(@"- %@", name);
    }
}

MaximAlien

NSMutableArray *countries = [[NSMutableArray alloc] init];
    
NSLocale *locale = [[NSLocale alloc] initWithLocaleIdentifier: @"en_US"];
    
NSArray *countryArray = [NSLocale ISOCountryCodes];
for (NSString *countryCode in countryArray)
{
    NSString *displayName = [locale displayNameForKey:NSLocaleCountryCode value:countryCode];
    [countries addObject:displayName];
}

MaximAlien

Width x Height

iPhone 4:
320 x 480 - portrait
480 x 320 - landscape

iPhone 4s (@2x):
640 x 960 - portrait
960 x 640 - landscape

MaximAlien

if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad)
{
  NSLog(@"iPad");
}
    
if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPhone)
{
  NSLog(@"iPhone");
}

MaximAlien

int[] intVal = new int[1];

JNIEXPORT jboolean JNICALL Java_com_test_example_ChIntVal_change_int(JNIEnv* env, jobject cls, jintArray intValArray)
{
    int testVal = -1;

    jint *exTypeVal = env->GetIntArrayElements(intValArray, 0);
    exTypeVal[0] = testVal;

    env->ReleaseIntArrayElements(intValArray, exTypeVal, 0);