❶ switch安装安卓系统后能用卡带吗
这完全没关系的,不管你是什么系统软件和外面的装修硬件是没有关系的。表带只是装饰作用。可以随时拆卸的。
❷ android中switch控件怎么判断开关
1234567891011public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) { switch (view.getId()) { case R.id.switch1: if(isChecked) { statusText.setText("开"); } else { statusText.setText("关"); } break; .....}不知道这是不是你要的效果
❸ android studio switch控件怎么使用
adroid studio switch控件的用法如下:
Switch sc=(Switch)findViewById(R.id.switch1);
sc.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton compoundButton, boolean b) {
if (b){
Toast.makeText(getApplicationContext(),"on",Toast.LENGTH_SHORT).show();
}else {
Toast.makeText(getApplicationContext(),"off",Toast.LENGTH_SHORT).show();
}
}
});
❹ android开发中switch在切换开/关状态时,先弹出一个dialog(确认/取消)以让用户确认是否切换开/关状态
要实现这种逻辑,方式实在太多了,最简单的就是switch注册点击事件
(不叫你注册onCheckedChanged事件是因为你设置setChecked的时候,又会触发onCheckedChanged)
然后在方法里先弹出一个alertDialog
确定后设置switch.setChecked(true/false)
❺ android switch开关和开关的颜色总是一样。。。
前面图的圆比后面的背景高,改成白色的就和背景融为一体了,右边那个绿色的苹果手机用的是这种,要想圆是白色的就必须圆比后面的背景小一点才可以
❻ android中switch case语句怎么获得选中的值
switch的用法是判断case后面的表达式和switch后面的表达式是否相匹配,一旦case匹配,就会顺序执行后面的程序代码,而不管后面的case是否匹配,直到遇见break。
语法如下:
switch(表达式)
{
case 常量表达式依:语句依;
....
case 常量表达式贰:语句贰;
default:语句;
}
依.default就是如果没有符合的case就执行它,default并不是必须的.
贰.case后的语句可以不用大括号.
case 后面必须是常量表达式constant
expressions, 错误表示如:
case
x
.
三.switch语句的判断条件可以接受int,byte,char,short,
enum不能接受其他类型.
四.一旦case匹配,就会顺序执行后面的程序代码,而不管后面的case是否匹配,直到遇见break,利用这一特性可以让好几个case执行统一语句
❼ android中的switch开关和ios中的不同,这样就需要通过动画来实现一个iphone开关了
做IOS开发的都知道,IOS提供了一个具有动态开关效果的UISwitch组件,这个组件很好用效果相对来说也很绚丽,当我们去点击开关的时候有动画效果,但遗憾的是Android上并没有给我们提供类似的组件(听说在Android4.0的版本上提供了具有动态效果的开关组件,不过我还没有去看文档),如果我们想实现类似的效果那该怎么办了呢?看来又得去自定义了。
公司的产品最近一直在做升级,主要做的就是把界面做的更绚丽更美观给用户更好的体验(唉,顾客是上帝......),其中的设置功能中就有开关按钮,原来的开关做的是两幅图片,通过点击图片来给开关设置不同的状态图片,但是这种效果很死板和程序的整体风格不太协调,于是就想着实现类似于IOS中的开关效果。
拿着笔在图纸上画了画,我实现的原理也是采用了两幅图片,一个整体的背景图:和一个小滑块图:,用小滑块图实现在背景图上滑动,当小滑块滑到左边时恰好遮挡了开字,就是显示的关了,同样原理当小滑块滑动到右侧时恰好遮挡了关字也就是现实开了,滑动的实现主要用的就是TranslateAnimation类,如有对TranslateAnimation不太熟悉的,问问度娘,她那有关TranslateAnimation的解说多了去了,毕竟自己动手,丰衣食足嘛,(*^__^*) 嘻嘻……
好了,老规矩来看一下项目结构吧:
工程中switch_button.xml文件就是对应的SwitchButton的布局文件,内容不需要解释,你一看就懂
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<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/switch_parent"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="@drawable/switch_bg">
<ImageView
android:id="@+id/switch_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/switch_btn" />
</LinearLayout>
SwitchButton的布局文件中根节点是个LinearLayout,把它的背景设置成了一个含有开关文字的图片,里边包含一个ImageView,这个ImageView就是用来在LinearLayout中进行滑动的。
其中自定义开关组件就是都在wedgit包下的SwitchButton,那么赶紧来看一下SwitchButton的代码吧
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public class SwitchButton extends LinearLayout {
/**
* 开关图片
*/
private LinearLayout switchParent;
/**
* 滑块图片
*/
private ImageView switchButton;
/**
* 按钮状态,默认关闭
*/
private boolean isOn = false;
/**
* 滑块需要滑动的距离
*/
private int scrollDistance;
/**
* 开关按钮监听器
*/
private SwitchChangedListner listner;
public SwitchButton(Context context) {
super(context);
initWedgits(context);
}
public SwitchButton(Context context, AttributeSet attrs) {
super(context, attrs);
initWedgits(context);
}
/**
* 初始化组件
*
* @param context
* 上下文环境
*/
private void initWedgits(Context context) {
try {
View view = LayoutInflater.from(context).inflate(
R.layout.switch_button, this);
switchParent = (LinearLayout) view.findViewById(R.id.switch_parent);
switchButton = (ImageView) view.findViewById(R.id.switch_button);
addListeners();
} catch (Exception e) {
e.printStackTrace();
}
}
/**
* 添加事件监听器
*/
private void addListeners() {
try {
switchParent.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
isOn = !isOn;
scrollSwitch();
if (null != listner) {
// 开关开发或者关闭的回调方法
listner.switchChanged(getId(), isOn);
}
}
});
} catch (Exception e) {
e.printStackTrace();
}
}
/**
* 滑动开关
*/
private void scrollSwitch() {
// 获取滑块需要滑动的距离,滑动距离等于父组建的宽度减去滑块的宽度
scrollDistance = switchParent.getWidth() - switchButton.getWidth();
// 初始化滑动事件
Animation animation = null;
if (isOn) {
animation = new TranslateAnimation(0, scrollDistance, 0, 0);
} else {
animation = new TranslateAnimation(scrollDistance, 0, 0, 0);
}
// 设置滑动时间
animation.setDuration(200);
// 滑动之后保持状态
animation.setFillAfter(true);
// 开始滑动
switchButton.startAnimation(animation);
}
/**
* 获取开关状态
*
* @return 【true:打开】【false:关闭】
*/
public boolean isOn() {
return isOn;
}
/**
* 设置开关状态
*
* @param isOn
* 开关状态【true:打开】【false:关闭】
*/
public void setOn(boolean isOn) {
if (this.isOn == isOn) {
return;
}
this.isOn = isOn;
post(new Runnable() {
@Override
public void run() {
scrollSwitch();
}
});
}
/**
* 设置开关状态监听器
*
* @param listner
* 开关状态监听器
*/
public void setOnSwitchListner(SwitchChangedListner listner) {
this.listner = listner;
}
/**
* 开关状态监听器
*
* @author llew
*
*/
public interface SwitchChangedListner {
/**
* 开关状态改变
*
* @param viewId
* 当前开关ID
* @param isOn
* 开关是否打开【true:打开】【false:关闭】
*/
public void switchChanged(Integer viewId, boolean isOn);
}
}
❽ android 一个Activity中怎样使用多个switch控件
java">publicvoidonCheckedChanged(CompoundButtonbuttonView,booleanisChecked){
switch(view.getId()){
caseR.id.switch1:
if(isChecked){
statusText.setText("开");
}else{
statusText.setText("关");
}
break;
.....
}
不知道这是不是你要的效果
❾ switch是安卓系统吗
任天堂switch当然不是android系统了,安卓系统只会轻易被破解,所有主流主机掌机都不会采用安卓系统。
❿ android 自定义switch样式
修改后的MySwitch控件接口基本与原Switch控件一致,并且除了可支持所有SDK外,增加了2项小功能:
1. 支持用Track背景图片的方式代替Texton Textoff等文字方式表现开关状态
2.支持调整控制Switch的高度
下面贴出Switch修改的关键代码:
/**
* <p>
* modified from android SDK 14(4.0) android.widget.Switch.
* <br/>
* <strong>new feature: </strong>
* <ol>
* <li>support SDK 1 or higher. </li>
* <li>you can use track drawable instead of text to display the changes of off-on state!</li>
* <li>you can control the Switch minimum height. </li>
* </ol>
* </p>
*
* @see {@link Switch}
* @author Wison
*/
public class MySwitch extends CompoundButton {
// Support track drawable instead of text
private Drawable mTrackOnDrawable;
private Drawable mTrackOffDrawable;
// Support minimum height
private int mSwitchMinHeight;
/**
* Construct a new Switch with a default style determined by the given theme attribute,
* overriding specific style attributes as requested.
*
* @param context The Context that will determine this widget's theming.
* @param attrs Specification of attributes that should deviate from the default styling.
* @param defStyle An attribute ID within the active theme containing a reference to the
* default style for this widget. e.g. android.R.attr.switchStyle.
*/
public MySwitch(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
mTextPaint = new TextPaint(Paint.ANTI_ALIAS_FLAG);
Resources res = getResources();
mTextPaint.density = res.getDisplayMetrics().density;
//float scaledDensity = res.getDisplayMetrics().scaledDensity;
//mTextPaint.setCompatibilityScaling(res.getCompatibilityInfo().applicationScale);
TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.Switch, defStyle, 0);
// off-on 模式: 图片模式或文字模式,图片模式是用Track背景图片表示off-on的状态,文字模式是用文字来表示off-on状态。
mTrackOnDrawable = a.getDrawable(R.styleable.Switch_trackOn);
mTrackOffDrawable = a.getDrawable(R.styleable.Switch_trackOff);
if (checkTrackOffOnDrawable()) {
// 如果设定图片模式,则默认显示off状态
mTrackDrawable = mTrackOffDrawable;
} else {
mTrackDrawable = a.getDrawable(R.styleable.Switch_track);
}
mThumbDrawable = a.getDrawable(R.styleable.Switch_thumb);
mTextOn = a.getText(R.styleable.Switch_textOn);
mTextOff = a.getText(R.styleable.Switch_textOff);
mThumbTextPadding = a.getDimensionPixelSize(R.styleable.Switch_thumbTextPadding, 0);
mSwitchMinWidth = a.getDimensionPixelSize(R.styleable.Switch_switchMinWidth, 0);
mSwitchMinHeight = a.getDimensionPixelSize(R.styleable.Switch_switchMinHeight, 0);
mSwitchPadding = a.getDimensionPixelSize(R.styleable.Switch_switchPadding, 0);
int appearance = a.getResourceId(R.styleable.Switch_switchTextAppearance, 0);
if (appearance != 0) {
setSwitchTextAppearance(context, appearance);
}
a.recycle();
ViewConfiguration config = ViewConfiguration.get(context);
mTouchSlop = config.getScaledTouchSlop();
mMinFlingVelocity = config.getScaledMinimumFlingVelocity();
// Refresh display with current params
refreshDrawableState();
setChecked(isChecked());
}
private boolean checkTrackOffOnDrawable() {
return mTrackOnDrawable != null && mTrackOffDrawable != null;
}
@SuppressLint("NewApi")
@Override
public void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
if (mOnLayout == null) {
mOnLayout = makeLayout(mTextOn);
}
if (mOffLayout == null) {
mOffLayout = makeLayout(mTextOff);
}
mTrackDrawable.getPadding(mTempRect);
final int maxTextWidth = Math.max(mOnLayout.getWidth(), mOffLayout.getWidth());
final int switchWidth = Math.max(mSwitchMinWidth,
maxTextWidth * 2 + mThumbTextPadding * 4 + mTempRect.left + mTempRect.right);
// final int switchHeight = mTrackDrawable.getIntrinsicHeight();
int switchHeight;
if (mSwitchMinHeight <= 0) {
switchHeight = mTrackDrawable.getIntrinsicHeight();
} else {
switchHeight = Math.max(mSwitchMinHeight, mTempRect.top + mTempRect.bottom);
}
mThumbWidth = maxTextWidth + mThumbTextPadding * 2;
mSwitchWidth = switchWidth;
mSwitchHeight = switchHeight;
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
final int measuredHeight = getMeasuredHeight();
if (measuredHeight < switchHeight) {
if (Build.VERSION.SDK_INT >= 11) {
setMeasuredDimension(getMeasuredWidthAndState(), switchHeight);
} else {
setMeasuredDimension(getMeasuredWidth(), switchHeight);
}
}
}
@Override
public void setChecked(boolean checked) {
if (checkTrackOffOnDrawable()) {
mTrackDrawable = checked ? mTrackOnDrawable : mTrackOffDrawable;
refreshDrawableState();
}
super.setChecked(checked);
mThumbPosition = checked ? getThumbScrollRange() : 0;
invalidate();
}
@Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
// Draw the switch
int switchLeft = mSwitchLeft;
int switchTop = mSwitchTop;
int switchRight = mSwitchRight;
int switchBottom = mSwitchBottom;
if (checkTrackOffOnDrawable()) {
mTrackDrawable = getTargetCheckedState() ? mTrackOnDrawable : mTrackOffDrawable;
refreshDrawableState();
}
mTrackDrawable.setBounds(switchLeft, switchTop, switchRight, switchBottom);
mTrackDrawable.draw(canvas);
canvas.save()
mTrackDrawable.getPadding(mTempRect);
int switchInnerLeft = switchLeft + mTempRect.left;
int switchInnerTop = switchTop + mTempRect.top;
int switchInnerRight = switchRight - mTempRect.right;
int switchInnerBottom = switchBottom - mTempRect.bottom;
canvas.clipRect(switchInnerLeft, switchTop, switchInnerRight, switchBottom);
mThumbDrawable.getPadding(mTempRect);
final int thumbPos = (int) (mThumbPosition + 0.5f);
int thumbLeft = switchInnerLeft - mTempRect.left + thumbPos;
int thumbRight = switchInnerLeft + thumbPos + mThumbWidth + mTempRect.right;
mThumbDrawable.setBounds(thumbLeft, switchTop, thumbRight, switchBottom);
mThumbDrawable.draw(canvas);
// mTextColors should not be null, but just in case
if (mTextColors != null) {
mTextPaint.setColor(mTextColors.getColorForState(getDrawableState(),
mTextColors.getDefaultColor()));
}
mTextPaint.drawableState = getDrawableState();
Layout switchText = getTargetCheckedState() ? mOnLayout : mOffLayout;
if (switchText != null) {
canvas.translate((thumbLeft + thumbRight) / 2 - switchText.getWidth() / 2,
(switchInnerTop + switchInnerBottom) / 2 - switchText.getHeight() / 2);
switchText.draw(canvas);
}
canvas.restore();
}
}
下面是关键属性声明:
<declare-styleable name="Switch">
<!-- Drawable to use when the switch is in the checked/"on" state. -->
<attr name="trackOn" format="reference" />
<!-- Drawable to use when the switch is in the unchecked/"off" state. -->
<attr name="trackOff" format="reference" />
<!-- Minimum height for the switch component -->
<attr name="switchMinHeight" format="dimension" />
<!-- Drawable to use as the "thumb" that switches back and forth. -->
<attr name="thumb" format="reference" />
<!-- Drawable to use as the "track" that the switch thumb slides within. -->
<attr name="track" format="reference" />
<!-- Text to use when the switch is in the checked/"on" state. -->
<attr name="textOn" format="string" />
<!-- Text to use when the switch is in the unchecked/"off" state. -->
<attr name="textOff" format="string" />
<!-- Amount of padding on either side of text within the switch thumb. -->
<attr name="thumbTextPadding" format="dimension" />
<!-- TextAppearance style for text displayed on the switch thumb. -->
<attr name="switchTextAppearance" format="reference" />
<!-- Minimum width for the switch component -->
<attr name="switchMinWidth" format="dimension" />
<!-- Minimum space between the switch and caption text -->
<attr name="switchPadding" format="dimension" />
</declare-styleable>