我怎樣才能在下面的代碼替換usleep
與NSTimer
:用NSTimer替換usleep?
/**
* DETERMINATE BAR with LABEL
*/
- (void)showDeterminateBarWithLabel:(CDVInvokedUrlCommand *)command {
// obtain commands
bool dim = [[command.arguments objectAtIndex:0] boolValue];
int increment = [[command.arguments objectAtIndex:1] intValue];
NSNumber* incrementValue = @(increment);
NSString* text = [command.arguments objectAtIndex:2];
// initialize indicator with options, text, detail
self.progressIndicator = nil;
self.progressIndicator = [MBProgressHUD showHUDAddedTo:self.webView.superview animated:YES];
self.progressIndicator.mode = MBProgressHUDModeDeterminateHorizontalBar;
self.progressIndicator.labelText = text;
// Check for dim : true ? false
if (dim == true) {
self.progressIndicator.dimBackground = YES;
}
// Load Progress bar with ::incrementValue
[self.progressIndicator showWhileExecuting:@selector(progressTask:) onTarget:self withObject:incrementValue animated:YES];
CDVPluginResult* pluginResult = [CDVPluginResult resultWithStatus:CDVCommandStatus_OK messageAsString:@""];
[self.commandDelegate sendPluginResult:pluginResult callbackId:command.callbackId];
}
- (void)progressTask:(NSNumber *)increment{
// get increment value
int _increment = [increment intValue];
float progress = 0.0f;
while (progress < 1.0f) {
progress += 0.01f;
self.progressIndicator.progress = progress;
// increment in microseconds (100000mms = 1s)
usleep(_increment);
}
}
此代碼是從here拍攝。
添加一些上下文可能很有用(即該代碼來自https://github.com/pbernasconi/cordova-progressIndicator/blob/master/src/ios/ProgressIndicator.m#L429,並且是回調方法對於MBProgressHUD)。 「翻譯」這種孤立的方法可能沒有意義。 –
@MartinR謝謝! – confile