J2ME GUI实战之三 ----------LWUIT实现切换特效

最新推荐文章于 2025-08-09 21:46:46 发布

iteye_20954

最新推荐文章于 2025-08-09 21:46:46 发布

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文章标签： SUN F# .net Blog

本文介绍了一个使用Java LWUIT库实现的UI过渡动画演示程序。该程序允许用户选择不同的过渡效果，如水平滑动、垂直滑动、淡入淡出等，并应用于窗口或控件之间的转换。此外，还支持设置过渡速度及高质量渲染模式。

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本文来自：http://blog.youkuaiyun.com/hellogv/ ，转载必须注明出处！

以上第一幅图是窗体切换特效之一；第二幅图是控件切换特效之一

以下给出设置特效的代码，这些代码同样来自Sample例子中：

/*
*Copyright?2008SunMicrosystems,Inc.Allrightsreserved.
*Useissubjecttolicenseterms.
*

*/

packagecom.sun.lwuit.uidemo;

importcom.sun.lwuit.Button;

importcom.sun.lwuit.ButtonGroup;

importcom.sun.lwuit.CheckBox;

importcom.sun.lwuit.Command;

importcom.sun.lwuit.Component;

importcom.sun.lwuit.Container;

importcom.sun.lwuit.Dialog;

importcom.sun.lwuit.Display;

importcom.sun.lwuit.Form;

importcom.sun.lwuit.Label;

importcom.sun.lwuit.M3G;

importcom.sun.lwuit.RadioButton;

importcom.sun.lwuit.TextArea;

importcom.sun.lwuit.TextField;

importcom.sun.lwuit.animations.CommonTransitions;

importcom.sun.lwuit.animations.Transition;

importcom.sun.lwuit.animations.Transition3D;

importcom.sun.lwuit.events.ActionEvent;

importcom.sun.lwuit.events.ActionListener;

importcom.sun.lwuit.layouts.BoxLayout;

importcom.sun.lwuit.layouts.FlowLayout;

importcom.sun.lwuit.plaf.Style;

/**
*Transitonsbetweenscreens
*
*@authorShaiAlmog

*/

publicclassTransitionDemoextendsDemo{

/**
*Theselectedradiobuttonindex

*/

privatestaticintselectedIndex=0;

publicStringgetName(){

return"Transitions";
}

protectedStringgetHelp(){

return"Transitionsappearwhenswitchingfromoneformtothenext,atransitioncanbebound"+

"totheoperationofexitingorenteringthescreen.Therearedefaulttransitionsinthetoolkit"+

"andcustomtransitionsareeasytowrite.";
}

privateRadioButtoncreateRB(Stringlabel,ButtonGroupg,Formf){

RadioButtonb=newRadioButton(label);
Styles=b.getStyle();

s.setMargin(0,0,0,0);

s.setBgTransparency(70);
g.add(b);
f.addComponent(b);

returnb;
}

protectedvoidexecute(finalFormf){

f.setLayout(newBoxLayout(BoxLayout.Y_AXIS));

Labeltitle=newLabel("Pleaseselectatransitiontype:");

title.getStyle().setMargin(0,0,0,0);

title.getStyle().setBgTransparency(70);
f.addComponent(title);

finalButtonGroupradioButtonGroup=newButtonGroup();

createRB("SlideHorizontal",radioButtonGroup,f);

createRB("SlideVertical",radioButtonGroup,f);

createRB("Fade",radioButtonGroup,f);

if(M3G.isM3GSupported()){

createRB("Rotate",radioButtonGroup,f);

createRB("FlyIn",radioButtonGroup,f);

createRB("Cube",radioButtonGroup,f);

createRB("StaticRotation",radioButtonGroup,f);

createRB("SwingTop",radioButtonGroup,f);

createRB("SwingBottom",radioButtonGroup,f);
}
radioButtonGroup.setSelected(selectedIndex);

finalTextFieldspeed=newTextField("500");
speed.setConstraint(TextArea.NUMERIC);

speed.setInputModeOrder(newString[]{"123"});

f.addComponent(createPair("Speed",speed));

finalFormdestination=newForm("Destination");

destination.addComponent(newLabel("Thisisthetransitiondestination..."));

destination.addCommand(newCommand("Back"){

publicvoidactionPerformed(ActionEventevt){
f.show();
}
});

finalCheckBoxhighQuality=newCheckBox("HighQuality");
highQuality.setSelected(!Display.getInstance().isLightMode());

highQuality.getStyle().setBgTransparency(0);
f.addComponent(highQuality);

highQuality.addActionListener(newActionListener(){

publicvoidactionPerformed(ActionEventevt){

if(Display.getInstance().isLightMode()){

Dialog.show("Warning","Thedeviceseemsabitweakforhighqualityrendering,"+

"usingthismodemightcrashyourdevice.","OK",null);
}
}
});

finalButtonupdateButton=newButton("PreviewTransition");

finalButtonapplyButton=newButton("ApplyTransition");

finalButtonapplyMenu=newButton("ApplyToMenu");

finalButtonapplyComponents=newButton("ApplyToComponents");
updateButton.setAlignment(Button.CENTER);

updateButton.getStyle().setPadding(5,5,7,7);
applyButton.setAlignment(Button.CENTER);

applyButton.getStyle().setPadding(5,5,7,7);

ActionListenerlistener=newActionListener(){

publicvoidactionPerformed(ActionEventev){

intrunSpeed=Integer.parseInt(speed.getText());

Transitionin,out;//in表示窗体切入时使用的特效，out表示窗体切出时使用的特性

switch(radioButtonGroup.getSelectedIndex()){

case0:{

out=CommonTransitions.createSlide(CommonTransitions.SLIDE_HORIZONTAL,false,runSpeed);

in=CommonTransitions.createSlide(CommonTransitions.SLIDE_HORIZONTAL,true,runSpeed);

break;
}

case1:{

out=CommonTransitions.createSlide(CommonTransitions.SLIDE_VERTICAL,false,runSpeed);

in=CommonTransitions.createSlide(CommonTransitions.SLIDE_VERTICAL,true,runSpeed);

break;
}

case2:{
out=CommonTransitions.createFade(runSpeed);
in=CommonTransitions.createFade(runSpeed);

break;
}

case3:{

out=Transition3D.createRotation(runSpeed,true);

in=Transition3D.createRotation(runSpeed,false);

break;
}

case4:{
out=Transition3D.createFlyIn(runSpeed);
in=Transition3D.createFlyIn(runSpeed);

break;
}

case5:{

out=Transition3D.createCube(runSpeed,true);

in=Transition3D.createCube(runSpeed,false);

break;
}

case6:{

out=Transition3D.createStaticRotation(runSpeed,true);

in=Transition3D.createStaticRotation(runSpeed,false);

break;
}

case7:{
out=Transition3D.createSwingIn(runSpeed);
in=out;

break;
}

default:{

out=Transition3D.createSwingIn(runSpeed,false);
in=out;

break;
}
}
selectedIndex=radioButtonGroup.getSelectedIndex();

if(outinstanceofTransition3D){//这里需要设置特效效果，仅对部分特效有效
((Transition3D)out).setHighQualityMode(highQuality.isSelected());
((Transition3D)in).setHighQualityMode(highQuality.isSelected());
}

if(updateButton==ev.getSource()){

//演示窗体切换特效
f.setTransitionOutAnimator(out);
f.setTransitionInAnimator(in);
destination.show();
}

elseif(applyButton==ev.getSource()){

//设置全部窗体在切换时都是同一个特效，注意是“窗体切换时”

f.setTransitionOutAnimator(null);

f.setTransitionInAnimator(null);
UIDemoMIDlet.setTransition(in,out);
}

/*这个函数是UIDemoMIDlet的成员函数
*publicstaticvoidsetTransition(Transitionin,Transitionout){
form.setTransitionInAnimator(in);
form.setTransitionOutAnimator(out);
}

*/

elseif(applyMenu==ev.getSource()){

//设置全部菜单都是同一个特效，菜单Menu就是一般在右下角弹出的
UIDemoMIDlet.setMenuTransition(in,out);
}

/*这个函数是UIDemoMIDlet的成员函数
*publicstaticvoidsetMenuTransition(Transitionin,Transitionout){
form.setMenuTransitions(in,out);
UIManager.getInstance().getLookAndFeel().setDefaultMenuTransitionIn(in);
UIManager.getInstance().getLookAndFeel().setDefaultMenuTransitionOut(out);
}

*/

elseif(applyComponents==ev.getSource()){

//设置控件都是同一个特效，这里的控件可以是Button

//当Button被选中时就会显示特效
UIDemoMIDlet.setComponentTransition(in);
}

/*这个函数是UIDemoMIDlet的成员函数
*publicstaticvoidsetComponentTransition(Transitiont){
componentTransitions=t;
form.setSmoothScrolling(false);
}

*/
}
};
updateButton.addActionListener(listener);
applyButton.addActionListener(listener);
applyMenu.addActionListener(listener);
applyComponents.addActionListener(listener);

ContainerbuttonPanel=newContainer(newFlowLayout(Component.CENTER));
buttonPanel.addComponent(updateButton);
f.addComponent(buttonPanel);

buttonPanel=newContainer(newFlowLayout(Component.CENTER));
buttonPanel.addComponent(applyButton);
f.addComponent(buttonPanel);

buttonPanel=newContainer(newFlowLayout(Component.CENTER));
buttonPanel.addComponent(applyMenu);
f.addComponent(buttonPanel);

buttonPanel=newContainer(newFlowLayout(Component.CENTER));
buttonPanel.addComponent(applyComponents);
f.addComponent(buttonPanel);
}
}