Hide bottom Virtual key navigation bar realizes full screen in two casesThe first type: Always hidden, not appearing when touching the screenWorkaround: set the following two parameters simultaneouslyView.system_ui_flag_hide_navigationView.system_ui_flag_immersiveAdd the following code in the OnCreate method of the activity that needs to hide the virtual key navigation bar:Window _window;/*** Hide pad Bottom Virtual key*/ _window = GetWindow ();Window
theme to use Noactionbar, otherwise it will cause conflict. Introducing compilation at the same time
dependencies{
Compile Filetree (include:[' *.jar '],dir: ' Libs ')
compile ' com.android.support:appcompat-v7 : 21.0.3 '
}
2. When you want to hide and display the component is not toolbar, but our custom layout myview, we need to pay attention to some points,
(1) Layout to use relative layout, let our custom layout suspended above the ListView.
(2) To avoid the first item is MyVi
Developer OptionsThe developer options are hidden, enter settings--about the phone, multiple click version number, a prompt message will appear, click a certain number of times after the developer options will be added to the Settings menu.650) this.width=650; "src=" Http://s3.51cto.com/wyfs02/M01/49/BE/wKioL1QZhPqyRPBnAAKdQa_kdIs124.jpg "title=" Android-version.png "style=" Float:none; "alt=" wkiol1qzhpqyr
The API to adjust brightness after Android 1.5 is hidden, but there are still ways to do it in the Android source code, as follows:
Copy Code code as follows:
Ipowermanager power = IPowerManager.Stub.asInterface (ServiceManager
. GetService ("power"));
if (power!= null) {
Power.setbacklightbrightness (brightness);
T
Http://blog.sina.com.cn/s/blog_5da93c8f0101e1yj.html The main thing this article introduces is to implement the use of the hidden API by importing the fully compiled Classes.jar package. This approach is simple and programmer programming is simple, just as the hidden APIs become visible in the SDK. Its disadvantage is the compatibility problem, I hope users pay attention to, in the use of a clear considerat
1 If the activity page has edittext, in order not to affect the user experience, we need to enter the page without popping the soft keyboard. How to set it up?When you configure activity in the Mainifest.xml file, you can set these two sentences:Android:configchanges= "Orientation|keyboardhidden" android:windowsoftinputmode= "AdjustUnspecified|stateHidden"2 If there is a edittext in the dialog box, when the input is complete, the soft keyboard is automatically
branch of the Ontouch method, we calculate the change in the position of our trigger point-mdeltay when the move event is triggered with the last move or down event, and then calculate a corresponding Translationy, After comparing with the toolbar height, judging whether the new translationy is lawful and lawful, the Settranslationy method is used to assign the value to toolbar.To trigger the UP event:When the up event is triggered, we need to use an animation to overdo it. First, the direction
"Hidden espionage" -- uses NDK NativeActivity technology to implement Android reinforcement and ndknativeactivity
Recently, Baidu security lab found a new code reinforcement method used by different virus families, this code reinforcement method cleverly utilizes the NativeActivity feature provided by the Android system to deploy malicious code. Currently, the Co
You need to modify the ListView class override Onintercepttouchevent () and ontouchevent ()//experiment with another method, overwriting the ontouchevent () of the drag icon in each row of the ListView, but the effect is not ideal. public class Mainactivity extends Activity {deleteadapter Deleteadapter;draglistview listview;boolean bflag;i Magebutton button; @Overridepublic void OnCreate (Bundle savedinstancestate) {super.oncreate (savedinstancestate); Setcontentview (r.layout.activity_main);d e
Android provides properties in the layout and can simply add animation effects, as follows:When you add a delete, hide, or display to a view in a layout, there will be a fade, and displacement animation.In addition to using attributes in an XML layout file animateLayoutChanges . You can also create LayoutTransition objects with the Setlayouttransition () method set in. The source code is as follows:private ViewGroup mContainerView; @Overrideprotected
Set the properties of layout to apply to Android view SetvisibilityThere are three values visibility VISIBLE, INVISIBLE, GONE.Visible invisible invisible, without occupying layout spaceJava code
Set display
Tv_main_title.setvisibility (view.visible);
Settings do not display or occupy space
Tv_main_title.setvisibility (View.gone);
Setting does not display but takes up space
Tv_main_title.setvisibility (view.invisible);
area is determined when the view has just been drawn, and if the subsequent correspondence is disrupted, the system may also generate a default layout to clarify the area.A better solution comes out: The bottom action Bar is also used as a drop-down refresh area, that is, with the drop-down refresh component as a layout.The problem is solved, but I don't feel very comfortable: my drop-down refresh component is generic, as long as the drop-down refresh function is not started, it is completely a
In Android development, when using the ListView, we often use Footerview or HeaderviewThe footer and headers added to the ListView are often hidden and displayed depending on the situation.Because footer and headers use the methods of deletion and addition, they always feel bad.When you set the view in footer and header directly to gone, the area is still occupied, although the content is not displayed.Thro
Android actionbar hidden by a small arrow on the left, androidactionbar
Styles. add the following style in xml, but this line of code will encounter an error
The minimum version number of the AndroidManifest. xml file must be modified to 11.
This paper analyzes the hidden display method of the soft keyboard of Android programming. Share to everyone for your reference, specific as follows:
Android is a specially designed operating system for touch screens, and when you click on the edit box, the system automatically pops up a soft keyboard for the user to enter.
Then, pop-up soft keyboard will inevi
At some point, you need to force the hidden Android input keyboard, such as the current keyboard is being displayed, this time click on the side Slide panel. You must force the keyboard to hide the IME.Common methods on the Internet are:1,inputmethodmanager imm = (Inputmethodmanager) getactivity (). Getsystemservice (Context.input_method_service);Imm.togglesoftinput (0, inputmethodmanager.hide_not_always);T
Android development: the keyboard is hidden by default when the Activity is started. And processing when the Edittext is blocked. androidedittextWhen the Activity is started, the keyboard is hidden by default:
Find your Activity in AndroidManifest. xml and add attributes to it:
Android: windowSoftInputMode = "stateAl
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