Android-处理不同的屏幕尺寸
[英]Android - dealing with different screen sizes
问题描述
I suspect this is a well dealt with topic as I've read several posts as indicated below but I seem to be encountering screen size issues. 
我怀疑这是一个处理得很好的主题，因为我阅读了以下几篇文章，但似乎遇到了屏幕尺寸问题。
For example for the Asus FonePad using my calculation in the code below I calculate the screen size to be 6.833 inches but on researching further on the device it is advertised as a 7 inch device. 例如，对于华硕FonePad，使用下面的代码计算得出的屏幕尺寸为6.833英寸，但在进一步研究该设备时，它的广告尺寸为7英寸。 This leads to me picking up the "wrong" screen size. 这导致我选择“错误的”屏幕尺寸。
Below is the code indicating how I'm calculating the screen size of the devices using my app and subsequently calling the correct layout: 下面的代码指示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();
}
As opposed to the above Is there any way to deal with the numerous array of devices? 与上述相反的是，有没有办法处理众多设备？
Here's my manifest file: 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>
I appreciate any assistance. 感谢您的协助。
1 个解决方案
解决方案1
0 2013-07-02 09:30:39
For Different screen size, The following is a list of resource directories in an application that provides different layout designs for different screen sizes and different bitmap drawables for small, medium, high, and extra high density screens. 对于不同的屏幕尺寸，以下是应用程序中的资源目录列表，该应用程序为不同的屏幕尺寸提供了不同的布局设计，并为小，中，高和超高密度屏幕提供了不同的位图可绘制对象。
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
The following code in the Manifest supports all dpis. 清单中的以下代码支持所有dpi。
<supports-screens android:smallScreens="true"
android:normalScreens="true"
android:largeScreens="true"
android:xlargeScreens="true"
android:anyDensity="true" />
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