View Controller Rotation

// Controls whether the current view Controller supports rotation.
-(Bool) shouldautorotate // auto rotate
{
Return yes;
}
// Sets the orientation of screen rotation. By default, the system supports rotation in three directions, vertical and Left and Right horizontal screens.
// Uiinterfaceorientationmaskportrait is in the positive direction in the vertical direction.
// Uiinterfaceorientationmasklandscapeleft left landscape
// Uiinterfaceorientationmasklandscaperight right landscape
// Uiinterfaceorientationmasklandscape landscape
-(Nsuinteger) supportedinterfaceorientations
{
Return uiinterfaceorientationmaskall;
}
// Triggered when the screen is about to rotate (the screen is not yet rotated)
-(Void) willrotatetointerfaceorientation :( uiinterfaceorientation) tointerfaceorientation duration :( nstimeinterval) Duration
{
// When the screen is about to rotate, You need to pause music and video playback and disable user interaction.
Nslog (@ "% s" ,__ function __);
[Super willrotatetointerfaceorientation: tointerfaceorientation Duration: Duration];
}


// Triggered when the screen is rotated.
-(Void) willanimaterotationtointerfaceorientation :( uiinterfaceorientation) tointerfaceorientation duration :( nstimeinterval) Duration
{
// In this method, if you want to add your own animation when the screen is rotated, it is implemented in this method.

Nslog (@ "% s" ,__ function __);
[Super willanimaterotationtointerfaceorientation: tointerfaceorientation Duration: Duration];
}

// Triggered when screen rotation is complete.
-(Void) didrotatefrominterfaceorientation :( uiinterfaceorientation) frominterfaceorientation
{
Nslog (@ "% s" ,__ function __);
[Super didrotatefrominterfaceorientation: frominterfaceorientation];
// After rotation, continue playing the music, continue playing the video, and enable user interaction.
}


// Triggered when the view layout on the View Controller is re-deployed.
-(Void) viewwilllayoutsubviews
{

[Super viewwilllayoutsubviews];
// Nslog (@ "QC ");
}


-(Bool) textfieldshouldreturn :( uitextfield *) textfield
{
[Textfield resignfirstresponder];
Return yes;

}
-(Void) SEL :( uibutton *) BTN
{
// [_ TF resignfirstresponder];

}



// Release the memory temporarily unavailable for the current program.
-(Void) didreceivememorywarning
{
[Super didreceivememorywarning];
// Dispose of any resources that can be recreated.
// When receiving a memory warning, remove the view that is not displayed on the current screen.

// Determine whether the view of the controller can be safely removed
// Determine whether the view of the current view controller is displaying. Self. View. Window is nil;

// Determine whether the view of the current view controller is successfully loaded. isviewloaded view is loaded


If (! Self. View. Window & [self isviewloaded])
{
// Safely remove the Controller View
Self. view = nil; // equivalent to [_ view release]; _ view = nil;
}
// Nslog (@ "View: % @", self. View. Window );

}

// When the screen is rotated every time, the view layout method is triggered to re-layout the subview on The View.
-(Void) layoutsubviews
{
[Super layoutsubviews];
// Nslog (@ "QCC ");

// Re-layout the child view.
// The layout is determined based on the orientation of the screen rotation.
// 1. Get the statusbarorientation Status Bar Height 20 for the orientation of the screen

Switch ([uiapplication sharedapplication]. statusbarorientation ){
Case uiinterfaceorientationportrait:
// Nslog (@ "vertical (positive )");
// _ Button. Frame = cgrectmake (60,240,200, 40 );

Case uiinterfaceorientationportraitupsidedown:
// Nslog (@ "vertical direction (reverse )");
_ Button. Frame = cgrectmake (60,240,200, 40 );
Break;
Case uiinterfaceorientationlandscapeleft:
// Nslog (@ "Left ");
// _ Button. Frame = cgrectmake (320,160, 60, 40 );

Case uiinterfaceorientationlandscaperight:

// Set the display style of the landscape chart.
_ Button. Frame = cgrectmake (320,160, 60, 40 );
// Nslog (@ "Right Direction ");
Break;


Default:
Break;
}
}

View Controller Rotation