Android gets the screen size and sets a title bar without a title bar. android title bar

Android gets the screen size and sets a title bar without a title bar. android title bar

Android is very often used to obtain the screen size. For example, if you want to write a program and make a program with strong versatility, the screen is very applicable. Generally, the layout is defined based on the screen length and width, so I will summarize this to facilitate future reference when I forget it. In addition, sometimes writing a program requires no title. You can set a screen without title in the program! Reprinted please indicate the source:

Http://blog.csdn.net/wdaming1986/article/details/6769821

 

Program:

The Code illustrates all truths:

1. mainActivity. Java code:

Java code

1. Package com.cn. daming;
3. Import android. app. Activity;
4. Import android. OS. Bundle;
5. Import android. util. DisplayMetrics;
6. Import android. view. Window;
7. Import android. view. WindowManager;
8. Import android. widget. TextView;
10. Public class MainActivity extends Activity {
12. Private TextView mTextView;
14. @ Override
15. Public void onCreate (Bundle savedInstanceState ){
16. Super. onCreate (savedInstanceState );
17. // Set to untitled
18. RequestWindowFeature (Window. FEATURE_NO_TITLE );
19. // Set to full screen mode
20. GetWindow (). setFlags (WindowManager. LayoutParams. FLAG_FULLSCREEN,
21. WindowManager. LayoutParams. FLAG_FULLSCREEN );
22. SetContentView (R. layout. main );
23. // Define the DisplayMetrics object
24. DisplayMetrics dm = new DisplayMetrics ();
25. // Obtain window properties
26. GetWindowManager (). getDefaultDisplay (). getMetrics (dm );
27. // Window width
28. Int screenWidth = dm. widthPixels;
29. // Window height
30. Int screenHeight = dm. heightPixels;
32. MTextView = (TextView) findViewById (R. id. text_view );
33. MTextView. setText ("screen width:" + screenWidth +
34. "\ N screen height:" + screenHeight );
35. }
36. }

 

Ii. main. xml layout file code:

Html code

1. <? Xml version = "1.0" encoding = "UTF-8"?>
2. <LinearLayout xmlns: android = "http://schemas.android.com/apk/res/android"
3. Android: orientation = "vertical"
4. Android: layout_width = "fill_parent"
5. Android: layout_height = "fill_parent"
6. >
7. <TextView
8. Android: id = "@ + id/text_view"
9. Android: layout_width = "fill_parent"
10. Android: layout_height = "fill_parent"
11. Android: layout_gravity = "center_vertical | center_horizontal"
12. Android: gravity = "center"
13. Android: text = "@ string/hello"
14. Android: textSize = "18pt"
15. />
16. </LinearLayout>