During development, we found that sometimes, even Android: layout_width and Android: layout_height are set to fill_parent, as shown in the following example, paratablelayout is still not displayed in full screen.
The solution is to add Android: fillviewport = "true" to horizontalscrollview.
After I some Baidu and look at the Android document, I found that Android on the rotary screen, especially only the horizontal screen or vertical screen, although the support of gravity rotation to Android4.3.1 only the perfect supportunspecified - 默认值,由系统选择显示方向landscape - 橫向portrait - 纵向reverseLandscape - 反横向(API >= 9)reversePortrait - 反纵向(API >= 9)user - 用户当前的首选方向behind - 与Activity
Android:layout_marginleft. If both properties are set at the same time on the button.Android:paddingleft= the content set on the 30px button is 30 pixels from the left edge of the buttonAndroid:layout_marginleft= "30px" The entire button is set from the left side of the content 30 pixelsTo get back to the point below, we can
Set caption:Actionbar.settitle ("About Us");Causes the return arrow to appearActionbar.setdisplayhomeasupenabled (TRUE);Listen for events that return buttonspublic boolean onoptionsitemselected (MenuItem item) {if (item.getitemid () = = Android. R.id.home) {Finish ();return true;}return super.onoptionsitemselected (item);}Hide Icon LogoUse the way the logo is set
Set logcat color in Android Studio
In Android Studio, the default logcat color is gray, and logs of different levels have no different colors,
This is far better than Eclipse, but the logcat color of Android Studio can also be set.
Go to the Settings page, search for lo
Ask the Android developers to help me look at this problem: android:l Aunchmode= "singleinstance" > such as: I set the secondactivity inside the boot mode is singleinstance, activity one start activity two, activity two start activity three. Such as:Activity one inside: Intent Intent = new Intent (firstactivity.this, secondactivity.class); Startactivityforresult (intent,1);//Activity two i
focus
ET. Clearfocus(); //Clear Focus
5. Comprehensive application code
EditText et = (EditText) Findviewbyid(R. ID. Ettest);
int Index = et. Getselectionstart(); Get cursor location
String Text="#请在这里输入话题 #";
Editable Edit = et. Geteditabletext(); Get the EditText text
If (index 0 | | | index >= edit. Length() ) {
Edit. Append(text);
}Else{
Edit. Insert(index,text); Insert text where the curs
Although the previous study of linear algebra and graphics principles, but in the actual encounter matrix or puzzled for a while, today through to colleagues to find a little way, the summary is as follows:Matrix is mainly used to scale, pan, rotate and tilt the plane, to simplify matrix transformation, Android encapsulates a series of methods for matrix transformation, including the Pre series method: Prescale,pretranslate,prerotate, Preskew,
There is one way to set the app to never be killed, AndroidManifest. add: android: persistent = "true" to the xml file. After the app is set in/system/app, the app is upgraded to the system core level without being killed, the stop operation is also blocked in settings-> applications. Proc #19: adj = svc/B 4067b028 255: com. xxx. xxx/10001 (started-services) # ca
During Android development, we often use the View.settag (object) method, especially when reusing view in a custom adapter of a ListView. The view also provides a way to set up multiple tag data, View.settag (Int,object), where the int value needs to be set correctly, otherwise this method will give an error. Let's see how to
method One:in Android/jni/com_android_server_input_inputmanagerservice.cpp 276 lines, the InputManager object can be initialized to set the speed of the mouse, mlocked.pointerspeed = 0;//range is 7 to 7, the default is 0,-7 slowest, 7 fastest. Method Two: set the mouse speed in the APK, call Inputmanager.java 537 row of public function setpointerspeed can
Demo Source Location: Http://git.oschina.net/zj2012zy/Android-Demo/tree/master/AndroidDemo/headsetGenerally need user information of a lot of also need to set up the user picture, usually set the user's avatar manipulation either from the phone to choose a picture, or directly from the phone to take pictures to set up.
Download: git clone https://github.com/zencodex/hack-android.git I mainly use Mac OSX, so the Linux under strict testing, there may be small problems. The signature script is written by itself, the temporary file is written to the/tmp directory, so Linux to determine the existence of/tmp. If you encounter problems, you can issue new on GitHub. Romtools can be used with kitchen tools, can be used for custom ROM modification, kitchen tools Download: git clone https://github.com/zencodex/
A. Use the adb LAN function to connect the device
1. Run the adb command with a usb connection and change the connection mode to tcpip.Adb tcpip {port} port is the port number2. Unplug the USB cable and run the adb command to connect to the device.Adb connect xxx. xxx (device ip): port (the port number just set)3. Run the adb command normally.Adb works in a special way by listening to Socket TCP 5554 and other ports to allow the IDE to communicate wit
The year before last friends are using Android Studio, but I am still a big eclipse fans, ah haha, but now Android Studio update to 1.3 version, everyone in use, I can not lag behind, riding, behind.Download in the Android website is really good, how good now I do not mention, there are many articles also have related descriptions, they can also download to use,
Many people are accustomed to eclipse and remember the shortcut keys for Eclipse. Suddenly migrating to Android Studio will find it very painful, because a lot of shortcut keys are different, one setting is a waste of time.How to set up Android Studio and Eclipse shortcut keys more quickly,You can choose Eclipse, and there are a lot of other options as well. The
When I first started using Android studio, when creating a javabean, I used to right-click on the JavaBean class to find the option to generate Get,set. But unfortunately, I can't find it.That way. How to quickly set,get or generate constructors to generate the ToString method.There are two ways of doing this:Way One: code-->generateMode two: Through the shortcut
In Android Studio, the default logcat display color is gray, and different levels of log are not color-separated,This is far less beautiful than eclipse, but the logcat color of Android Studio can be set in factEnter settings interface, search Logcat, enter the following interfaceYou can see that the default log is red except for the error and assert levels, and
EditText properties have been encapsulated in the relevant settings, the previous article also mentioned, unfamiliar can go to see the previous EditText attribute Daquan, here focus on the input restriction properties: android:digits= "1234567890.+-*/%\n ( "Limit input boxes can only enter their own definition of these strings if the input other will not be displayed android:phonenumber=" true "limit input box can only enter mobile phone number android:password=" true " Any content entered in th
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