我怀疑这是一个处理得很好的主题，因为我已经阅读了如下所示的几个帖子，但我似乎遇到了屏幕尺寸问题。
例如，对于使用我在下面的代码中计算的华硕FonePad，我计算屏幕尺寸为6.833英寸，但在进一步研究该设备时，它被宣传为7英寸设备。这导致我拿起“错误的”屏幕尺寸。
下面是代码，说明我如何使用我的应用程序计算设备的屏幕尺寸，然后调用正确的布局：
// Splash screen delay
public final void SplashScreenThread() {
// For tracking purposes record in logcat SplashScreenThread() method has been called
Log.i(TAG + "onCreate()", "SplashScreenThread(); HAS STARTED");
// Thread for the display of the SplashScreen
SplashThread = new Thread() {
@Override
public void run() {
try {
int waited = 0;
while(_active && (waited < SplashTime)) {
sleep(100);
if(_active) {
waited += 100;
}
}
} catch(InterruptedException e) {
// do nothing
Log.e(TAG + "SplashScreenThread()", "SplashScreenThread() ERROR IS AS FOLLOWS: " + e.toString());
} finally {
// Call method finish to kill any
finish();
// Fetch the screen size in order to call correct layout wrt the next screen - firstly create and object of type DisplayMetrics
DisplayMetrics DeviceScreenSize = new DisplayMetrics();
// Secondly fetch the window manager using method chaining
getWindowManager().getDefaultDisplay().getMetrics(DeviceScreenSize);
// Calculate the width of the screen in inches
double x_DeviceScreenSize = Math.pow(DeviceScreenSize.widthPixels/DeviceScreenSize.xdpi,2);
// Record in logcat DeviceScreenSize.xdpi
Log.d(TAG,"DeviceScreenSize.widthPixels is: " + DeviceScreenSize.widthPixels + " and DeviceScreenSize.xdpi is: " + DeviceScreenSize.xdpi);
Log.d(TAG,"DeviceScreenSize.heightPixels is: " + DeviceScreenSize.heightPixels + " and DeviceScreenSize.ydpi is: " + DeviceScreenSize.ydpi);
// Calculate the height of the screen in inches
double y_DeviceScreenSize = Math.pow(DeviceScreenSize.heightPixels/DeviceScreenSize.ydpi,2);
// Obtain screen size using pythagoras theorem
Device_Screen_Size_In_Inches_To_Display_Log_In_Screen = Math.sqrt(x_DeviceScreenSize + y_DeviceScreenSize);
// Record in logcat screen size in inches
Log.e(TAG,"DeviceScreenSize.widthPixels is: " + DeviceScreenSize.widthPixels + "\nDeviceScreenSize.heightPixels is: " + DeviceScreenSize.heightPixels + "\nScreen inches : " + Device_Screen_Size_In_Inches_To_Display_Log_In_Screen);
// Identify device screen size based on calculation of screen size
if (Device_Screen_Size_In_Inches_To_Display_Log_In_Screen < 2.9) {
Log.e(TAG,"< 2.9 inch range called");
Intent ScreenNotSupportedScreen = new Intent(SplashScreenFour.this, UnderDevlt_Scn_1_8inches.class);
startActivity(ScreenNotSupportedScreen);
Log.e(TAG,"DEVICE NOT ACCOMODATED - DEVICE DETERMINED TO BE LESS THAN 2.9 INCHES - ACTUAL DEVICE SIZE IS: " + Device_Screen_Size_In_Inches_To_Display_Log_In_Screen);
} else if ((Device_Screen_Size_In_Inches_To_Display_Log_In_Screen >= 2.9) && (Device_Screen_Size_In_Inches_To_Display_Log_In_Screen < 3.6)) {
Log.e(TAG,"2.9 to 3.6 inch range called");
Intent ScreenNotSupportedScreen = new Intent(SplashScreenFour.this, UnderDevlt_Scn_2_9inches.class);
startActivity(ScreenNotSupportedScreen);
Log.e(TAG,"DEVICE NOT ACCOMODATED - ACTUAL DEVICE SIZE IS: " + Device_Screen_Size_In_Inches_To_Display_Log_In_Screen);
} else if ((Device_Screen_Size_In_Inches_To_Display_Log_In_Screen >= 3.6) && (Device_Screen_Size_In_Inches_To_Display_Log_In_Screen < 3.8)) {
Log.e(TAG,"3.6 to 3.8 inch range called");
Intent ScreenNotSupportedScreen = new Intent(SplashScreenFour.this, UnderDevlt_Scn_2_9inches.class);
startActivity(ScreenNotSupportedScreen);
Log.e(TAG,"DEVICE NOT ACCOMODATED - ACTUAL DEVICE SIZE IS: " + Device_Screen_Size_In_Inches_To_Display_Log_In_Screen);
} else if ((Device_Screen_Size_In_Inches_To_Display_Log_In_Screen >= 3.8) && (Device_Screen_Size_In_Inches_To_Display_Log_In_Screen < 4.0)) {
Log.e(TAG,"3.8 to 4.0 inch range called");
Intent specific_login_screen = new Intent(SplashScreenFour.this, LogInScreen_3_8inches.class);
startActivity(specific_login_screen);
} else if ((Device_Screen_Size_In_Inches_To_Display_Log_In_Screen >= 4.0) && (Device_Screen_Size_In_Inches_To_Display_Log_In_Screen < 4.28)) {
Log.e(TAG,"4.0 to 4.28 inch range called");
Intent specific_login_screen = new Intent(SplashScreenFour.this, LogInScreen_4inches.class);
startActivity(specific_login_screen);
Log.e(TAG,"DEVICE NOT ACCOMODATED - ACTUAL DEVICE SIZE IS: " + Device_Screen_Size_In_Inches_To_Display_Log_In_Screen);
} else if ((Device_Screen_Size_In_Inches_To_Display_Log_In_Screen >= 4.28) && (Device_Screen_Size_In_Inches_To_Display_Log_In_Screen < 4.8)) {
Log.e(TAG,"4.28 to 4.3 inch range called");
Intent specific_login_screen = new Intent(SplashScreenFour.this, LogInScreen_4_28inches.class);
startActivity(specific_login_screen);
Log.e(TAG,"DEVICE NOT ACCOMODATED - ACTUAL DEVICE SIZE IS: " + Device_Screen_Size_In_Inches_To_Display_Log_In_Screen);
} else if ((Device_Screen_Size_In_Inches_To_Display_Log_In_Screen >= 4.8) && (Device_Screen_Size_In_Inches_To_Display_Log_In_Screen < 4.9)) {
Log.e(TAG,"4.8 to 4.9 inch range called");
Intent specific_login_screen = new Intent(SplashScreenFour.this, LogInScreen_4_65inches.class);
startActivity(specific_login_screen);
Log.e(TAG,"DEVICE NOT ACCOMODATED - ACTUAL DEVICE SIZE IS: " + Device_Screen_Size_In_Inches_To_Display_Log_In_Screen);
} else if ((Device_Screen_Size_In_Inches_To_Display_Log_In_Screen >= 4.9) && (Device_Screen_Size_In_Inches_To_Display_Log_In_Screen < 5.5)) {
Log.e(TAG,"4.9 to 5.5 inch range called");
Intent ScreenNotSupportedScreen = new Intent(SplashScreenFour.this, LogInScreen_4_98inches.class);
startActivity(ScreenNotSupportedScreen);
Log.e(TAG,"DEVICE NOT ACCOMODATED - ACTUAL DEVICE SIZE IS: " + Device_Screen_Size_In_Inches_To_Display_Log_In_Screen);
} else if ((Device_Screen_Size_In_Inches_To_Display_Log_In_Screen >= 5.5) && (Device_Screen_Size_In_Inches_To_Display_Log_In_Screen < 5.9)) {
Log.e(TAG,"5.5 to 5.9 inch range called");
Intent specific_login_screen = new Intent(SplashScreenFour.this, LogInScreen_5_7inches.class);
startActivity(specific_login_screen);
Log.e(TAG,"DEVICE NOT ACCOMODATED - ACTUAL DEVICE SIZE IS: " + Device_Screen_Size_In_Inches_To_Display_Log_In_Screen);
} else if ((Device_Screen_Size_In_Inches_To_Display_Log_In_Screen >= 5.9) && (Device_Screen_Size_In_Inches_To_Display_Log_In_Screen < 6.0)) {
Log.e(TAG,"5.9 to 6.0 inch range called");
Intent specific_login_screen = new Intent(SplashScreenFour.this, LogInScreen_5_9inches.class);
startActivity(specific_login_screen);
Log.e(TAG,"DEVICE NOT ACCOMODATED - ACTUAL DEVICE SIZE IS: " + Device_Screen_Size_In_Inches_To_Display_Log_In_Screen);
} else if ((Device_Screen_Size_In_Inches_To_Display_Log_In_Screen >= 6.0) && (Device_Screen_Size_In_Inches_To_Display_Log_In_Screen < 6.7)) {
Log.e(TAG,"6.0 to 7.0 inch range called");
Intent ScreenNotSupportedScreen = new Intent(SplashScreenFour.this, UnderDevlt_Scn_Finish.class);
startActivity(ScreenNotSupportedScreen);
Log.e(TAG,"DEVICE NOT ACCOMODATED - ACTUAL DEVICE SIZE IS: " + Device_Screen_Size_In_Inches_To_Display_Log_In_Screen);
} else if ((Device_Screen_Size_In_Inches_To_Display_Log_In_Screen >= 6.7) && (Device_Screen_Size_In_Inches_To_Display_Log_In_Screen < 8.0)) {
Log.e(TAG,"7.0 to 8.0 inch range called");
Intent specific_login_screen = new Intent(SplashScreenFour.this, LogInScreen.class);
startActivity(specific_login_screen);
} else if ((Device_Screen_Size_In_Inches_To_Display_Log_In_Screen >= 8.0) && (Device_Screen_Size_In_Inches_To_Display_Log_In_Screen < 9.0)) {
Log.e(TAG,"8.0 to 9.0 inch range called");
Intent ScreenNotSupportedScreen = new Intent(SplashScreenFour.this, UnderDevlt_Scn_Finish.class);
startActivity(ScreenNotSupportedScreen);
Log.e(TAG,"DEVICE NOT ACCOMODATED - ACTUAL DEVICE SIZE IS: " + Device_Screen_Size_In_Inches_To_Display_Log_In_Screen);
} else if ((Device_Screen_Size_In_Inches_To_Display_Log_In_Screen >= 9.0) && (Device_Screen_Size_In_Inches_To_Display_Log_In_Screen <= 10.2)) {
Log.e(TAG,"> 9.0 to 10.2 inch range called");
Intent specific_login_screen = new Intent(SplashScreenFour.this, LogInScreen_10inches.class);
startActivity(specific_login_screen);
Log.e(TAG,"DEVICE NOT ACCOMODATED - ACTUAL DEVICE SIZE IS: " + Device_Screen_Size_In_Inches_To_Display_Log_In_Screen);
}
}
}
};
SplashThread.start();
}
与上述相反有没有办法处理众多设备？
这是我的清单文件：
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="applcs.test"
android:versionCode="6"
android:versionName="1.06">
<uses-sdk
android:minSdkVersion="3"
android:maxSdkVersion="17"
android:targetSdkVersion="8"/>
<instrumentation android:name="android.test.InstrumentationTestRunner"
android:targetPackage="applcs.test"
android:label="AppLogInScreen_4inchesTestCase" />
<uses-permission android:name="android.permission.INTERNET"></uses-permission>
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
<uses-permission android:name="android.permission.CALL_PHONE"></uses-permission>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"></uses-permission>
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"></uses-permission>
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE"></uses-permission>
<uses-feature android:name="android.hardware.telephony" android:required="false" />
<supports-screens android:smallScreens="true"
android:normalScreens="true"
android:largeScreens="true"
android:xlargeScreens="true"
android:anyDensity="true"/>
<application
android:icon="@drawable/ic_App_launcher_96"
android:label="@string/app_name"
android:theme="@android:style/Theme.NoTitleBar.Fullscreen">
<uses-library android:name="android.test.runner" />
<!-- Splash screen -->
<activity
android:name="AppSplashScreenFour"
android:screenOrientation="landscape">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<!-- Login screens -->
<activity android:name="AppLogInScreen_3_6_inches"
android:screenOrientation="landscape">
</activity>
<activity android:name="AppLogInScreen_3_8inches"
android:screenOrientation="landscape">
</activity>
<activity android:name="AppLogInScreen_4inches"
android:screenOrientation="landscape">
</activity>
<activity android:name="AppLogInScreen_4_28inches"
android:screenOrientation="landscape">
</activity>
<activity android:name="AppLogInScreen_4_65inches"
android:screenOrientation="landscape">
</activity>
<activity android:name="AppLogInScreen_4_98inches"
android:screenOrientation="landscape">
</activity>
<activity android:name="AppLogInScreen_5_7inches"
android:screenOrientation="landscape">
</activity>
<activity android:name="AppLogInScreen_5_9inches"
android:screenOrientation="landscape">
</activity>
<activity android:name="AppLogInScreen"
android:screenOrientation="landscape">
</activity>
<activity android:name="AppLogInScreen_10inches"
android:screenOrientation="landscape"
android:clearTaskOnLaunch="true">
</activity>
<!-- Home screens -->
<activity android:name="AppHomeScreen_3_6inches"
android:screenOrientation="landscape">
</activity>
<activity android:name="AppHomeScreen_3_8inches"
android:screenOrientation="landscape">
</activity>
<activity android:name="AppHomeScreen_4inches"
android:screenOrientation="landscape">
</activity>
<activity android:name="AppHomeScreen_4_28inches"
android:screenOrientation="landscape">
</activity>
<activity android:name="AppHomeScreen_4_65inches"
android:screenOrientation="landscape">
</activity>
<activity android:name="AppHomeScreen_4_98inches"
android:screenOrientation="landscape">
</activity>
<activity android:name="AppHomeScreen_5_7inches"
android:screenOrientation="landscape">
</activity>
<activity android:name="AppHomeScreen_5_9inches"
android:screenOrientation="landscape">
</activity>
<activity android:name="AppHomeScreen_7inches"
android:screenOrientation="landscape">
</activity>
<activity android:name="AppHomeScreen_10inches"
android:screenOrientation="landscape">
</activity>
<!-- SW900 home screens -->
<activity android:name="AppSW900AdminHomeScreen3_6inches"
android:screenOrientation="landscape">
</activity>
<activity android:name="AppSW900AdminHomeScreen3_8inches"
android:screenOrientation="landscape">
</activity>
<activity android:name="AppSW900AdminHomeScreen4inches"
android:screenOrientation="landscape">
</activity>
<activity android:name="AppSW900AdminHomeScreen4_28inches"
android:screenOrientation="landscape">
</activity>
<activity android:name="AppSW900AdminHomeScreen4_65inches"
android:screenOrientation="landscape">
</activity>
<activity android:name="AppSW900AdminHomeScreen4_98inches"
android:screenOrientation="landscape">
</activity>
<activity android:name="AppSW900AdminHomeScreen5_7inches"
android:screenOrientation="landscape">
</activity>
<activity android:name="AppSW900AdminHomeScreen5_9inches"
android:screenOrientation="landscape">
</activity>
<activity android:name="AppSW900AdminHomeScreen7inches"
android:screenOrientation="landscape">
</activity>
<activity android:name="AppSW900AdminHomeScreen10inches"
android:screenOrientation="landscape">
</activity>
<!-- Sales home screens -->
<activity android:name="AppSalesHomeScreen_4inches"
android:screenOrientation="landscape">
</activity>
<activity android:name="AppSalesHomeScreen_7inches"
android:screenOrientation="landscape">
</activity>
<activity android:name="AppSalesHomeScreen_10inches"
android:screenOrientation="landscape">
</activity>
<activity android:name="AppProdBrochsHomeScreen"
android:screenOrientation="landscape">
</activity>
<activity android:name="AppSales_ProdBrochsScreen_4inches"
android:screenOrientation="landscape">
</activity>
<activity
android:name="AppSales_ProdBrochsScreen_7inches"
android:screenOrientation="landscape">
</activity>
<activity android:name="AppSales_ProdBrochsScreen_10inches"
android:screenOrientation="landscape">
</activity>
<activity android:name="AppSales_ProdVideosScreen_4inches"
android:screenOrientation="landscape">
</activity>
<activity android:name="AppSales_ProdVideosScreen_7inches"
android:screenOrientation="landscape">
</activity>
<activity android:name="AppSales_ProdVideosScreen_10inches"
android:screenOrientation="landscape">
</activity>
<activity android:name="AppSales_ProdPricingScreen_7inches"
android:screenOrientation="landscape">
</activity>
<activity android:name="AppVideoScreen"
android:screenOrientation="landscape">
</activity>
<activity android:name="AppPDFWebView"
android:screenOrientation="landscape">
</activity>
<activity android:name="AppPDFReader">
</activity>
<activity android:name="AppVideoHomeScreen"
android:screenOrientation="landscape">
</activity>
<activity android:name="AppVideoHomeScreen2"
android:screenOrientation="landscape">
</activity>
<activity android:name="AppListActivity"
android:screenOrientation="landscape">
</activity>
<activity
android:name="AppVideoScreen_Tab0ProdCat1Prod1"
android:screenOrientation="landscape">
</activity>
<activity
android:name="AppVideoScreen_Tab0ProdCat1Prod2"
android:screenOrientation="landscape">
</activity>
<activity
android:name="AppVideoScreen_Tab0ProdCat1Prod3"
android:screenOrientation="landscape">
</activity>
<activity
android:name="AppVideoScreen_Tab0ProdCat1Prod4"
android:screenOrientation="landscape">
</activity>
<activity android:name="AndroidGridLayoutActivity"
android:screenOrientation="landscape">
</activity>
<activity android:name="FullImageActivity"
android:screenOrientation="landscape">
</activity>
<activity android:name="FullImageActivityTwo"
android:screenOrientation="landscape">
</activity>
<!-- Under Devlt Scn -->
<activity android:name="App_UnderDevlt_Scn"
android:screenOrientation="landscape">
</activity>
<activity android:name="App_UnderDevlt_Scn_1_8inches"
android:screenOrientation="landscape">
</activity>
<activity android:name="App_UnderDevlt_Scn_4inches"
android:screenOrientation="landscape">
</activity>
<activity android:name="App_UnderDevlt_Scn_4_65inches"
android:screenOrientation="landscape">
</activity>
<activity android:name="App_UnderDevlt_Scn_5_7inches"
android:screenOrientation="landscape">
</activity>
<activity android:name="App_UnderDevlt_Scn_7inches"
android:screenOrientation="landscape">
</activity>
<activity android:name="App_UnderDevlt_Scn_2_9inches"
android:screenOrientation="landscape">
</activity>
<activity android:name="App_UnderDevlt_Scn_3_8inches"
android:screenOrientation="landscape">
</activity>
<activity android:name="App_UnderDevlt_Scn_10inches"
android:screenOrientation="landscape">
</activity>
<activity android:name="App_UnderDevlt_Scn_Finish"
android:screenOrientation="landscape">
</activity>
<activity
android:name="AppWebViewActivity"
android:theme="@android:style/Theme.NoTitleBar">
</activity>
<activity
android:name="SampleActivity"
android:label="@string/app_name" >
</activity>
</application>
</manifest>
我感谢任何帮助。
答案 0 :(得分：0)
对于不同的屏幕尺寸，以下是应用程序中的资源目录列表，它为不同的屏幕尺寸和不同的位图绘图提供不同的布局设计，适用于小型，中型，高密度和超高密度屏幕。
res/layout/my_layout.xml // layout for normal screen size ("default")
res/layout-small/my_layout.xml // layout for small screen size
res/layout-large/my_layout.xml // layout for large screen size
res/layout-xlarge/my_layout.xml // layout for extra large screen size
res/layout-xlarge-land/my_layout.xml // layout for extra large in landscape orientation
res/drawable-mdpi/my_icon.png // bitmap for medium density
res/drawable-hdpi/my_icon.png // bitmap for high density
res/drawable-xhdpi/my_icon.png // bitmap for extra high density
Manifest中的以下代码支持所有dpis。
<supports-screens android:smallScreens="true"
android:normalScreens="true"
android:largeScreens="true"
android:xlargeScreens="true"
android:anyDensity="true" />