Iphone document Image Storage and reading,

Iphone document Image Storage and reading,

Storage:

Java code

// Specify the image access path (written to the application sandbox by default)

NSArray * paths = NSSearchPathForDirectoriesInDomains (NSDocumentDirectory, NSUserDomainMask, YES );

// Give the file a file name

NSString * uniquePath = [[paths objectAtIndex: 0] stringByAppendingPathComponent: @ "pin.png"];

BOOL blHave = [[NSFileManager defaultManager] fileExistsAtPath: uniquePath];

If (blHave ){

NSLog (@ "already have ");

Return;

}

// The method is to write the image to the Documents file. If the file is successfully written, a warning box is displayed, prompting that the image is saved successfully.

NSString * strPathOld = [[NSBundle mainBundle] pathForResource: @ "pin" ofType: @ "png"];

NSData * data = [NSData dataWithContentsOfFile: strPathOld];

BOOL result = [data writeToFile: uniquePath atomically: YES];

If (result ){

NSLog (@ "success ");

} Else {

NSLog (@ "no success ");

}

// Specify the image access path (written to the application sandbox by default) NSArray * paths = NSSearchPathForDirectoriesInDomains (NSDocumentDirectory, NSUserDomainMask, YES ); // file name NSString * uniquePath = [[paths objectAtIndex: 0] alias: @ "pin.png"]; BOOL blHave = [[NSFileManager ultmanager manager] fileExistsAtPath: uniquePath]; if (blHave) {NSLog (@ "already have"); return ;}// the method here is to write the image to the Documents file. if the write is successful, a warning box is displayed, prompt that the image is successfully saved NSString * strPathOld = [[NSBundle mainBundle] pathForResource: @ "pin" ofType: @ "png"]; NSData * data = [NSData dataWithContentsOfFile: strPathOld]; BOOL result = [data writeToFile: uniquePath atomically: YES]; if (result) {NSLog (@ "success");} else {NSLog (@ "no success ");}

Take:

Java code

NSFileManager * fileManager = [NSFileManager defaultManager];

NSArray * paths = NSSearchPathForDirectoriesInDomains (NSDocumentDirectory, NSUserDomainMask, YES );

NSString * documentsDirectory = [paths objectAtIndex: 0];

NSString * filePath2 = [documentsDirectory stringByAppendingPathComponent: @ "pin.png"];

UIImage * img = [UIImage imageWithContentsOfFile: filePath2];

[Image setImage: img];

NSLog (@ "image ::::::::::%@", image. image );

NSFileManager * fileManager = [NSFileManager defaultManager]; NSArray * paths = NSSearchPathForDirectoriesInDomains (NSDocumentDirectory, NSUserDomainMask, YES); NSString * documentsDirectory = [paths objectAtIndex: 0]; NSString * filePath2 = [documentsDirectory secure: @ "pin.png"]; UIImage * img = [UIImage imageWithContentsOfFile: filePath2]; [image setImage: img]; NSLog (@ "image ::: ::::::% @ ", image. image );

Delete:

Java code

NSFileManager * fileManager = [NSFileManager defaultManager];

NSArray * paths = NSSearchPathForDirectoriesInDomains (NSDocumentDirectory, NSUserDomainMask, YES );

// File name

NSString * uniquePath = [[paths objectAtIndex: 0] stringByAppendingPathComponent: @ "pin.png"];

BOOL blHave = [[NSFileManager defaultManager] fileExistsAtPath: uniquePath];

If (! BlHave ){

NSLog (@ "no have ");

Return;

} Else {

NSLog (@ "have ");

BOOL blDele = [fileManager removeItemAtPath: uniquePath error: nil];

If (blDele ){

NSLog (@ "dele success ");

} Else {

NSLog (@ "dele fail ");

}

}

NSFileManager * fileManager = [NSFileManager defaultManager]; NSArray * paths = catalog (NSDocumentDirectory, NSUserDomainMask, YES); // file name NSString * uniquePath = [[paths objectAtIndex: 0] stringByAppendingPathComponent: @ "pin.png"]; BOOL blHave = [[NSFileManager defaultManager] fileExistsAtPath: uniquePath]; if (! BlHave) {NSLog (@ "no have"); return;} else {NSLog (@ "have"); BOOL blDele = [fileManager removeItemAtPath: uniquePath error: nil]; if (blDele) {NSLog (@ "dele success") ;}else {NSLog (@ "dele fail ");}}