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This article illustrates how Android gets the size of a mobile screen. Share to everyone for your reference, specific as follows:
There are mainly three objects TextView, buttons, and Displaymetrics, where Displaymetrics is the key class to get the size of the phone screen
The concepts of PX, dip, SP, and DP are vague. I checked it online and found it clearly in theory.
1. PX (pixels): the point on the screen, which is related to the density. The density is high, and the PX size per unit area is large.
2. Dip or DP (pixels unrelated to density ). This is related to the hardware of the device. We recommend that you use this feature to support WVGA, hvga, and qvga 5 hexadec
Screen Size1. Different Layout
The screen sizes of Android mobile phones vary by 480X320,640x360,800 X. How can an app automatically adapt to different screens? In fact, it is very simple, just need to create different layout folder under the res directory, such as: layout-640x360, layout-800x480, all the layout files will be written to R after compilation. java,
Android generates a long image for the scrollView that exceeds the screen size. androidscrollview
Many times, we want to share all the content of an interface, but there is too much content, beyond the size of the screen, simple screenshots can no longer meet our needs, at t
Android to get the screen longer than the width, referring to the online have a lot of code, but the results and the actual discrepancy, such as my phone is i9000, screen size is 480*800px, the result is 320*533 result is very unreliable, so I wrote a few lines of code, pro-Test Test parameters: Test environment: i900
/** Obtain the window manager and default display, which we'll use to * find out the size of the Devi Ce ' s display (in pixels)*/WindowManager WindowManager=(WindowManager) Getsystemservice (Context.window_service); Display Display=Windowmanager.getdefaultdisplay (); /*Obtain the API level of the device running the game*/ intAPI =Android.os.Build.VERSION.SDK_INT; /** we ' re dealing with deprecated methods, so We filter older devices * (less t
This article describes the Android programming implementation to get the title bar, status bar height, screen size, and simulate the home key method. Share to everyone for your reference, specific as follows:
1. Get the title bar height:
/**
* Get the height of the title bar *
* @param activity
* @return
/public
int Gettitleheight (activity activity
Get methodFirst look at a program code:int main(int*argv[]){ QApplication a(argc, argv); Dialog w; w.show(); return a.exec();}A is an application, W is a dialog box; we get the screen size, we need to get it from variable A; QScreen *iScreen = a.primaryScreen(); QSize rScreenSize = iScreen->size();Although the
This article for everyone to explain how to get the mobile phone screen size, provide a solution, share for everyone to reference, the specific content as follows
Run Effect chart:
After running the program, when we click the button, we can see the following effect chart:
Specific code:
We can get the resolution size of the phone
Android get custom control position coordinates, screen size, title bar, status bar height1. Get the custom control heightIn this activity, get the height of the control in the current activity:Button button = (button) Findviewbyid (R.id.button), int buttonheight = Button.getheight ();Gets the height of the control in the other XML file in activity:Layoutinflater
Screen Size:
Displaymetrics dm = new displaymetrics (); getwindowmanager (). getdefadisplay display (). getmetrics (DM); DM. widthpixels; DM. heightpixels;
Use a style sheet:
Create a style. xml file under Res/Values
Write in the layout file:
Style = "@ style/David styletext1"Android: Id = "@ + ID/TV1" An
Android generates a long image for scrollView exceeding the screen size
Many times, we want to share all the content of an interface, but there is too much content, beyond the size of the screen, simple screenshots can no longer meet our needs, at this time, we can capture t
Screen size1. Different layoutAndroid phone screen size is different, there are 480x320,640x360,800x480. How can I get the app to adapt to various screens automatically? In fact, it is very simple to create a different layout folder in the Res directory, such as: layout-640x360,layout-800x480, all layout files will be compiled after compilation Write to the R.jav
One, resolution Independent1. Using DP (DPI)Android uses density-independent pixels (DP) to specify the screen size, which allows zooming to achieve the same effect on devices with different pixel densities and the same screen size. (No problem with different
Dip or DP (density-independent pixels)Length (true length): inches, inchPixels per inch dpi (screen density)Pixels: pxDip formula: px/dip=dpi/160 (screen pixel/dip = screen density/160), inch = Px/dpi,dip=160*inchScreen 320*480, the number of pixels in the horizontal direction is 320, the number of pixels in the vertical direction is 480, the resolution is 160 (m
In Android, the screen length and width are obtained.CodeBut the results do not match the actual results. For example, if my mobile phone is i9000 and the screen size is 480 * 800px, the result is 320*533.
The results were unreliable, so I wrote a few lines of code to test it.
Test parameters:
Test environment: i
look first for example the following layout:In The size of the button is half the screen, then centered in the center of the layout, each person has its own answer, see my method, layout layout XML such as the following:XML version= "1.0" encoding= "Utf-8"? >Here are a few key points:
The layout is linearlayout so that layout_weight can be set.
Set the value of the LinearLayout android:weightsu
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