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WakeLock 扩展：保持设备唤醒扩展，防止系统休眠和电池优化 · App Inventor 2 中文网
...01-26)：添加 WifiLock 功能
1.5 (2021-03-21)：添加版本属性和 SDK 版本检查
1.7 (2021-07-20)：添加 OnAfterRelease、AcquireCausesWakeup 属性和相关方法
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Clear Application's Data Programmatically
...ations:
import android.os.Build.*;
if (VERSION_CODES.KITKAT <= VERSION.SDK_INT) {
((ActivityManager)context.getSystemService(ACTIVITY_SERVICE))
.clearApplicationUserData(); // note: it has a return value!
} else {
// use old hacky way, which can be removed
// once minSdkV...
What permission do I need to access Internet from an Android application?
...eavocats"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="9"
android:targetSdkVersion="16" />
<uses-permission android:name="android.permission.INTERNET" />
<application
android:allowBackup="true"
android:icon="@drawable/ic_l...
What is Gradle in Android Studio?
... command line, but you have to learn what each tool (dx, aapt) does in the SDK.
Eclipse saved us all from these low level but important, fundamental details by giving us their own build system.
Now, have you ever wondered why the res folder is in the same directory as your src folder?
This is whe...
TransformXml task could not be loaded from Microsoft.Web.Publishing.Tasks.dll
...nd although it works, I was going to try installing the Microsoft Windows SDK for Windows 7 and .NET Framework 4 Windows SDK for Windows 7 and .NET Framework 4, but it is taking to long to download.
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How to get the ActionBar height?
...by @Marina.Eariel
TypedValue tv = new TypedValue();
if(Build.VERSION.SDK_INT>=Build.VERSION_CODES.HONEYCOMB){
if (getTheme().resolveAttribute(android.R.attr.actionBarSize, tv, true))
actionBarHeight = TypedValue.complexToDimensionPixelSize(tv.data,getResources().getDisplayMetr...
Why does MSBuild look in C:\ for Microsoft.Cpp.Default.props instead of c:\Program Files (x86)\MSBui
...g Microsoft Visual C++ 2010 Service Pack 1 Compiler Update for the Windows SDK 7.1 fixed the MSB4019 errors that I was getting building on Windows7 x64.
The readme of that update states that the recommended order is
Visual Studio 2010
Windows SDK 7.1
Visual Studio 2010 SP1
Visual C++ 2010 SP1 Com...
Build error: You must add a reference to System.Runtime
... can't find the dll files at the specified folder, you can install Windows SDK as explained: stackoverflow.com/a/14517992/3918598
– user3918598
Aug 12 '14 at 19:26
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How to Sign an Already Compiled Apk
...
Step 2 or 4: Zipalign
zipalign which is a tool provided by the Android SDK found in e.g. %ANDROID_HOME%/sdk/build-tools/24.0.2/ is a mandatory optimization step if you want to upload the apk to the Play Store.
zipalign -p 4 my.apk my-aligned.apk
Note: when using the old jarsigner you need to ...
Check orientation on Android phone
...just landscape vs portrait. getOrientation() is correct unless you are on SDK 8+ in which case you should use getRotation(). The 'reverse' modes are supported in SDK 9+.
– Paul
Oct 16 '12 at 20:54
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