Android获取屏幕高度、状态栏高度、标题栏高度

1、 屏幕区域的获取

1 DisplayMatrics matric = new DisplayMatrics();

2 Display display = activity.getWindowManager().getDefaultDisplay();  

3 display.getMetrics(matric);

4 int width = matric.widthPixels;  // 宽度

5 int height = matric.heightPixels;  // 高度

2、应用区域的获取

1 Rect outRect = new Rect();  

2 activity.getWindow().getDecorView().getWindowVisibleDisplayFrame(outRect);  

3 int width = outRect.width();

4 int height = outRect.height()

其中，outRect.top 即是状态栏高度。

3、view绘制区域获取

1 Rect outRect = new Rect();  
 
2 activity.getWindow().findViewById(Window.ID_ANDROID_CONTENT).getDrawingRect(outRect);

3 int width = outRect.width();

4 int height = outRect.height();

用绘制区域的outRect.top - 应用区域的outRect.top 即是标题栏的高度。

注意：如果刚启动Activity时就要计算这些数据，最好在 onWindowFocusChanged 函数中进行，否则得到的某些数据可能是错误的，比如，应用区域高宽的获取。

 1 public class ScreenSize extends Activity {  
 2     private TextView mScreenSizeView ;  
 3     @Override  
 4     public void onCreate(Bundle savedInstanceState) {  
 5         super.onCreate(savedInstanceState);  
 6         setContentView(R.layout.activity_screen_size);  
 7         mScreenSizeView = (TextView) findViewById(R.id.screen_size);  
 8     }  
 9   
10     @Override  
11     public void onWindowFocusChanged(boolean hasFocus) {  
12         super.onWindowFocusChanged(hasFocus);  
13         if(hasFocus){  
14             System.out.println("second");  
15             StringBuilder sb = new StringBuilder();  
16             Dimension dimen1 = getAreaOne(this);  
17             Dimension dimen2 = getAreaTwo(this);  
18             Dimension dimen3 = getAreaThree(this);  
19             sb.append("Area one : 
	Width: "+dimen1.mWidth + ";	Height: "+dimen1.mHeight);  
20             sb.append("
Area two: 
	Width: "+dimen2.mWidth + ";	Height: "+dimen2.mHeight);  
21             sb.append("
Area three: 
	Width: "+dimen3.mWidth + ";	Height: "+dimen3.mHeight);  
22             mScreenSizeView.setText(sb.toString());  
23         }  
24     }  
25   
26     @Override  
27     public boolean onCreateOptionsMenu(Menu menu) {  
28         getMenuInflater().inflate(R.menu.activity_screen_size, menu);  
29         return true;  
30     }  
31       
32     private Dimension getAreaOne(Activity activity){  
33         Dimension dimen = new Dimension();  
34         Display disp = activity.getWindowManager().getDefaultDisplay();  
35         Point outP = new Point();  
36         disp.getSize(outP);  
37         dimen.mWidth = outP.x ;  
38         dimen.mHeight = outP.y;  
39         return dimen;  
40     }  
41     private Dimension getAreaTwo(Activity activity){  
42         Dimension dimen = new Dimension();  
43       Rect outRect = new Rect();  
44       activity.getWindow().getDecorView().getWindowVisibleDisplayFrame(outRect);  
45       System.out.println("top:"+outRect.top +" ; left: "+outRect.left) ;  
46       dimen.mWidth = outRect.width() ;  
47       dimen.mHeight = outRect.height();  
48         return dimen;  
49     }  
50     private Dimension getAreaThree(Activity activity){  
51         Dimension dimen = new Dimension();  
52      // 用户绘制区域   
53         Rect outRect = new Rect();  
54         activity.getWindow().findViewById(Window.ID_ANDROID_CONTENT).getDrawingRect(outRect);  
55         dimen.mWidth = outRect.width() ;  
56         dimen.mHeight = outRect.height();  
57         // end  
58         return dimen;  
59      }

1 private class Dimension {  
2     public int mWidth ;  
3     public int mHeight ;  
4     public Dimension(){}  
5 }