Android 平板电脑还是手机-安卓
有没有办法检查用户是在使用平板电脑还是手机?Android 平板电脑还是手机-安卓,android,tablet,Android,Tablet,有没有办法检查用户是在使用平板电脑还是手机? 我的倾斜功能和我的新平板电脑(Transformer)有问题。没有区别。你应该定义你认为的区别,并检查它。galaxy标签是手机吗?还是平板电脑?为什么 您应该定义您要查找的特定功能,并为此编写代码 看起来你在寻找“倾斜”。我想这和加速度计是一样的(这是一个词吗?)。您可以使用以下方法检查设备是否支持它: public class Accel extends Activity implements SensorListener { ... Sen
我的倾斜功能和我的新平板电脑(Transformer)有问题。没有区别。你应该定义你认为的区别,并检查它。galaxy标签是手机吗?还是平板电脑?为什么 您应该定义您要查找的特定功能,并为此编写代码 看起来你在寻找“倾斜”。我想这和加速度计是一样的(这是一个词吗?)。您可以使用以下方法检查设备是否支持它:
public class Accel extends Activity implements SensorListener {
...
SensorManager sensorMgr = (SensorManager) getSystemService(SENSOR_SERVICE);
boolean accelSupported = sensorMgr.registerListener(this,
SENSOR_ACCELEROMETER,
SENSOR_DELAY_UI);
...
}
(来自。我没有测试过)我认为这是最简单的诚实方法。这将检查正在使用的屏幕大小:
Display display = getWindowManager().getDefaultDisplay();
int width = display.getWidth();
int height = display.getHeight();
祝你好运 请查看下面的代码
private boolean isTabletDevice() {
if (android.os.Build.VERSION.SDK_INT >= 11) { // honeycomb
// test screen size, use reflection because isLayoutSizeAtLeast is
// only available since 11
Configuration con = getResources().getConfiguration();
try {
Method mIsLayoutSizeAtLeast = con.getClass().getMethod(
"isLayoutSizeAtLeast", int.class);
boolean r = (Boolean) mIsLayoutSizeAtLeast.invoke(con,
0x00000004); // Configuration.SCREENLAYOUT_SIZE_XLARGE
return r;
} catch (Exception x) {
x.printStackTrace();
return false;
}
}
return false;
}
为什么不计算屏幕对角线的大小,并用它来决定设备是手机还是平板电脑
private boolean isTablet()
{
Display display = getWindowManager().getDefaultDisplay();
DisplayMetrics displayMetrics = new DisplayMetrics();
display.getMetrics(displayMetrics);
int width = displayMetrics.widthPixels / displayMetrics.densityDpi;
int height = displayMetrics.heightPixels / displayMetrics.densityDpi;
double screenDiagonal = Math.sqrt( width * width + height * height );
return (screenDiagonal >= 9.0 );
}
当然,人们可能会争论阈值是否应为9英寸或更小。例如,手机和平板电脑之间有一个重要区别(至少对我的程序而言)。这是设备的默认方向。手机有一个纵向,平板电脑的横向。以及分别确定所述装置的方法:
private static boolean isLandscapeDefault(Display display) {
Log.d(TAG, "isTablet()");
final int width = display.getWidth();
final int height = display.getHeight();
switch (display.getOrientation()) {
case 0: case 2:
if(width > height) return true;
break;
case 1: case 3:
if(width < height) return true;
break;
}
return false;
}
private静态布尔isLandscapeDefault(显示){
Log.d(标记“isTablet()”);
final int width=display.getWidth();
最终整数高度=display.getHeight();
开关(display.getOrientation()){
案例0:案例2:
如果(宽度>高度)返回true;
打破
案例1:案例3:
如果(宽度<高度)返回true;
打破
}
返回false;
}
编辑:
与Dan Hulme讨论后,更改了方法的名称。要检测设备是否为平板电脑,请使用以下代码:
public boolean isTablet(Context context) {
boolean xlarge = ((context.getResources().getConfiguration().screenLayout & Configuration.SCREENLAYOUT_SIZE_MASK) == Configuration.SCREENLAYOUT_SIZE_XLARGE);
boolean large = ((context.getResources().getConfiguration().screenLayout & Configuration.SCREENLAYOUT_SIZE_MASK) == Configuration.SCREENLAYOUT_SIZE_LARGE);
return (xlarge || large);
}
大屏幕和X大屏幕的尺寸由制造商根据与眼睛的距离来确定(因此是平板电脑的概念)
更多信息:这篇文章对我帮助很大 不幸的是,我没有必要的声誉来评估所有帮助我的答案 我需要确定我的设备是平板电脑还是手机,这样我就能够实现屏幕的逻辑。在我的分析中,从MDPI开始,平板电脑必须超过7英寸(Xlarge) 下面是基于这篇文章创建的代码
/**
* Checks if the device is a tablet or a phone
*
* @param activityContext
* The Activity Context.
* @return Returns true if the device is a Tablet
*/
public static boolean isTabletDevice(Context activityContext) {
// Verifies if the Generalized Size of the device is XLARGE to be
// considered a Tablet
boolean xlarge = ((activityContext.getResources().getConfiguration().screenLayout &
Configuration.SCREENLAYOUT_SIZE_MASK) ==
Configuration.SCREENLAYOUT_SIZE_XLARGE);
// If XLarge, checks if the Generalized Density is at least MDPI
// (160dpi)
if (xlarge) {
DisplayMetrics metrics = new DisplayMetrics();
Activity activity = (Activity) activityContext;
activity.getWindowManager().getDefaultDisplay().getMetrics(metrics);
// MDPI=160, DEFAULT=160, DENSITY_HIGH=240, DENSITY_MEDIUM=160,
// DENSITY_TV=213, DENSITY_XHIGH=320
if (metrics.densityDpi == DisplayMetrics.DENSITY_DEFAULT
|| metrics.densityDpi == DisplayMetrics.DENSITY_HIGH
|| metrics.densityDpi == DisplayMetrics.DENSITY_MEDIUM
|| metrics.densityDpi == DisplayMetrics.DENSITY_TV
|| metrics.densityDpi == DisplayMetrics.DENSITY_XHIGH) {
// Yes, this is a tablet!
return true;
}
}
// No, this is not a tablet!
return false;
}
当设备为平板电脑时,使用此方法返回true
public boolean isTablet(Context context) {
return (context.getResources().getConfiguration().screenLayout
& Configuration.SCREENLAYOUT_SIZE_MASK)
>= Configuration.SCREENLAYOUT_SIZE_LARGE;
}
我的假设是,当您定义“手机/电话”时,您希望知道您是否可以在设备上拨打电话,而这些电话无法在定义为“平板电脑”的设备上完成。验证方法如下所示。如果你想知道一些基于传感器、屏幕大小等的信息,那么这真的是一个不同的问题 此外,在使用屏幕分辨率或资源管理大屏幕与xlarge时,在过去可能是一种有效的方法。新的“移动”设备现在具有如此大的屏幕和高的分辨率,使这条线变得模糊,而如果您真的想知道电话呼叫与无电话呼叫的能力,下面是“最佳”
TelephonyManager manager = (TelephonyManager)context.getSystemService(Context.TELEPHONY_SERVICE);
if(manager.getPhoneType() == TelephonyManager.PHONE_TYPE_NONE){
return "Tablet";
}else{
return "Mobile";
}
我认为平板电脑的最小和最大宽度和高度分别为600像素和600像素,
因此需要知道屏幕密度和高度/宽度(以dp为单位,
要检索值:
DisplayMetrics metrics = new DisplayMetrics();
activity.getWindowManager().getDefaultDisplay().getMetrics(metrics);
Display display = ((WindowManager)getSystemService(Context.WINDOW_SERVICE)).getDefaultDisplay();
int width = display.getWidth();
int height = display.getHeight();
float density = metrics.density;
if((width/density>=600 && height/density>=600))
isTablette = true;
else
isTablette = false;
基于罗伯特·戴尔·约翰逊三世(Robert Dale Johnson III)和赫尔顿·艾萨克(Helton Isac),我提出了这段代码,希望它有用
public static boolean isTablet(Context context) {
TelephonyManager manager =
(TelephonyManager)context.getSystemService(Context.TELEPHONY_SERVICE);
if (manager.getPhoneType() == TelephonyManager.PHONE_TYPE_NONE) {
//Tablet
return true;
} else {
//Mobile
return false;
}
}
public static boolean isTabletDevice(Context activityContext) {
// Verifies if the Generalized Size of the device is XLARGE to be
// considered a Tablet
boolean xlarge =
((activityContext.getResources().getConfiguration().screenLayout &
Configuration.SCREENLAYOUT_SIZE_MASK) == Configuration.SCREENLAYOUT_SIZE_XLARGE);
// If XLarge, checks if the Generalized Density is at least MDPI (160dpi)
if (xlarge) {
DisplayMetrics metrics = new DisplayMetrics();
Activity activity = (Activity) activityContext;
activity.getWindowManager().getDefaultDisplay().getMetrics(metrics);
// MDPI=160, DEFAULT=160, DENSITY_HIGH=240, DENSITY_MEDIUM=160,
// DENSITY_TV=213, DENSITY_XHIGH=320
if (metrics.densityDpi == DisplayMetrics.DENSITY_DEFAULT
|| metrics.densityDpi == DisplayMetrics.DENSITY_HIGH
|| metrics.densityDpi == DisplayMetrics.DENSITY_MEDIUM
|| metrics.densityDpi == DisplayMetrics.DENSITY_XHIGH) {
// Yes, this is a tablet!
return true;
}
}
// No, this is not a tablet!
return false;
}
所以在你的代码中做一个过滤器
if(isTabletDevice(Utilities.this) && isTablet(Utilities.this)){
//Tablet
} else {
//Phone
}
考虑到“新”acepted目录(例如values-sw600dp),我根据屏幕的“宽度DP:
public static final int TABLET_MIN_DP_WEIGHT = 450;
protected static boolean isSmartphoneOrTablet(Activity act){
DisplayMetrics metrics = new DisplayMetrics();
act.getWindowManager().getDefaultDisplay().getMetrics(metrics);
int dpi = 0;
if (metrics.widthPixels < metrics.heightPixels){
dpi = (int) (metrics.widthPixels / metrics.density);
}
else{
dpi = (int) (metrics.heightPixels / metrics.density);
}
if (dpi < TABLET_MIN_DP_WEIGHT) return true;
else return false;
}
public static final int table\u MIN\u DP\u WEIGHT=450;
受保护的静态布尔值isSmartphoneOrTablet(活动法案){
DisplayMetrics=新的DisplayMetrics();
act.getWindowManager().getDefaultDisplay().getMetrics(度量);
int-dpi=0;
if(metrics.widthPixels
在此列表中,您可以找到一些流行设备和平板电脑尺寸的DP:
Wdp/Hdp
银河系连接:360/567XOOM:1280/752
银河注:400/615
NEXUS 7:961/528
GALAXY TAB(>7&&对于那些想要参考谷歌决定哪些设备将使用平板电脑用户界面的代码的人,可以参考以下内容:
// SystemUI (status bar) layout policy
int shortSizeDp = shortSize
* DisplayMetrics.DENSITY_DEFAULT
/ DisplayMetrics.DENSITY_DEVICE;
if (shortSizeDp < 600) {
// 0-599dp: "phone" UI with a separate status & navigation bar
mHasSystemNavBar = false;
mNavigationBarCanMove = true;
} else if (shortSizeDp < 720) {
// 600-719dp: "phone" UI with modifications for larger screens
mHasSystemNavBar = false;
mNavigationBarCanMove = false;
} else {
// 720dp: "tablet" UI with a single combined status & navigation bar
mHasSystemNavBar = true;
mNavigationBarCanMove = false;
}
}
//SystemUI(状态栏)布局策略
int shortSizeDp=shortSize
*DisplayMetrics.DENSITY\u默认值
/DisplayMetrics.DENSITY\u设备;
如果(短尺寸P<600){
//0-599dp:“电话”用户界面,带有单独的状态和导航栏
mHasSystemNavBar=false;
mNavigationBarCanMove=true;
}否则如果(shortSizeDp<720){
//600-719dp:“电话”用户界面,带有较大屏幕的修改
mHasSystemNavBar=false;
mNavigationBarCanMove=false;
}否则{
//720dp:“平板电脑”用户界面,带有单个组合状态和导航栏
mHasSystemNavBar=true;
mNavigationBarCanMove=false;
}
}
如前所述,您不想检查设备是平板电脑还是手机,但想了解设备的功能
大多数情况下,平板电脑和手机的区别在于屏幕大小,这就是为什么要使用不同的布局文件。这些文件存储在res/layout-
目录中。您可以在directoyres/values-
中为每个布局创建一个XML文件,并将int/bool/string资源放入其中以进行区分在您使用的布局之间使用inguish
例子:
文件res/values/screen.xml
(假设res/layout/
包含手机的布局文件)
<?xml version="1.0" encoding="utf-8"?>
<resources>
<string name="screen_type">phone</string>
</resources>
<?xml version="1.0" encoding="utf-8"?>
<resources>
<string name="screen_type">7-inch-tablet</string>
</resources>
<?xml version="1.0" encoding="utf-8"?>
<resources>
<string name="screen_type">10-inch-tablet</string>
</resources>
SensorManager.remapCoordinateSystem(inputRotationMatrix, SensorManager.AXIS_X,
SensorManager.AXIS_Y, outputRotationMatrix);
<activity
...
android:screenOrientation="nosensor">
...
</activity>
private boolean isTabletDevice(Resources resources) {
int screenLayout = resources.getConfiguration().screenLayout & Configuration.SCREENLAYOUT_SIZE_MASK;
boolean isScreenLarge = (screenLayout == Configuration.SCREENLAYOUT_SIZE_LARGE);
boolean isScreenXlarge = (screenLayout == Configuration.SCREENLAYOUT_SIZE_XLARGE);
return (isScreenLarge || isScreenXlarge);
}
public void onCreate(Bundle savedInstanceState) {
[...]
if (this.isTabletDevice(this.getResources()) == true) {
[...]
}
}
DisplayUtil.isTablet(this);
DisplayUtil.isTenInch(this);
public static boolean isTablet(Context context) {
return (context.getResources().getConfiguration().screenLayout
& Configuration.SCREENLAYOUT_SIZE_MASK)
>= Configuration.SCREENLAYOUT_SIZE_LARGE;
}
public static boolean isTablet(Context ctx){
return = (ctx.getResources().getConfiguration().screenLayout
& Configuration.SCREENLAYOUT_SIZE_MASK)
>= Configuration.SCREENLAYOUT_SIZE_LARGE;
}
public static boolean isTablet(Activity act)
{
Display display = act.getWindow().getWindowManager().getDefaultDisplay();
DisplayMetrics displayMetrics = new DisplayMetrics();
display.getMetrics(displayMetrics);
float width = displayMetrics.widthPixels / displayMetrics.xdpi;
float height = displayMetrics.heightPixels / displayMetrics.ydpi;
double screenDiagonal = Math.sqrt( width * width + height * height );
int inch = (int) (screenDiagonal + 0.5);
Toast.makeText(act, "inch : "+ inch, Toast.LENGTH_LONG).show();
return (inch >= 7 );
}
public boolean isTablet() {
int screenLayout = getResources().getConfiguration().screenLayout;
return (Build.VERSION.SDK_INT >= 11 &&
(((screenLayout & Configuration.SCREENLAYOUT_SIZE_MASK) == Configuration.SCREENLAYOUT_SIZE_LARGE) ||
((screenLayout & Configuration.SCREENLAYOUT_SIZE_MASK) == Configuration.SCREENLAYOUT_SIZE_XLARGE)));
}
public static boolean isTablet(Context context) {
return context.getResources().getConfiguration().smallestScreenWidthDp >= 600;
}
/*
Returns '1' if device is a tablet
or '0' if device is not a tablet.
Returns '-1' if an error occured.
May require READ_EXTERNAL_STORAGE
permission.
*/
public static int isTablet()
{
try
{
InputStream ism = Runtime.getRuntime().exec("getprop ro.build.characteristics").getInputStream();
byte[] bts = new byte[1024];
ism.read(bts);
ism.close();
boolean isTablet = new String(bts).toLowerCase().contains("tablet");
return isTablet ? 1 : 0;
}
catch (Throwable t)
{t.printStackTrace(); return -1;}
}
Rect surfaceRect = getHolder().getSurfaceFrame();
screenWidth = surfaceRect.width();
screenHeight = surfaceRect.height();
screenWidthF = (float) screenWidth;
screenHeightF = (float) screenHeight;
widthheightratio = screenWidthF/screenHeightF;
if(widthheightratio>=1.5) {
isTablet=false;
}else {
isTablet=true;
}
public static boolean isTablet(Context context) {
return context.getResources().getConfiguration().smallestScreenWidthDp >= 600;
}
Use this method which returns true when the device is a tablet
public boolean isTablet(Context context) {
return (context.getResources().getConfiguration().screenLayout
& Configuration.SCREENLAYOUT_SIZE_MASK)
>= Configuration.SCREENLAYOUT_SIZE_LARGE;
}
/**
* Check if the Configuration's current {@link #screenLayout} is at
* least the given size.
*
* @param size The desired size, either {@link #SCREENLAYOUT_SIZE_SMALL},
* {@link #SCREENLAYOUT_SIZE_NORMAL}, {@link #SCREENLAYOUT_SIZE_LARGE}, or
* {@link #SCREENLAYOUT_SIZE_XLARGE}.
* @return Returns true if the current screen layout size is at least
* the given size.
*/
public boolean isLayoutSizeAtLeast(int size) {
int cur = screenLayout&SCREENLAYOUT_SIZE_MASK;
if (cur == SCREENLAYOUT_SIZE_UNDEFINED) return false;
return cur >= size;
}
getResources().getConfiguration().
isLayoutSizeAtLeast(Configuration.SCREENLAYOUT_SIZE_LARGE);