调用系统照相机

1. public class MyCameraActivity extends Activity {  
2.     /** Called when the activity is first created. */  
3.     private Button button;  
4.   
5.     @Override  
6.     public void onCreate(Bundle savedInstanceState) {  
7.         super.onCreate(savedInstanceState);  
8.         setContentView(R.layout.main);  
9.         button = (Button) findViewById(R.id.button);  
10.         button.setOnClickListener(new OnClickListener() {  
11.   
12.             @Override  
13.             public void onClick(View v) {  
14.                 // TODO Auto-generated method stub  
15.                 Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);  
16.   
17.                 startActivityForResult(intent, 1);  
18.             }  
19.         });  
20.     }  
21.   
22.     @Override  
23.     protected void onActivityResult(int requestCode, int resultCode, Intent data) {  
24.         // TODO Auto-generated method stub  
25.         super.onActivityResult(requestCode, resultCode, data);  
26.         if (resultCode == Activity.RESULT_OK) {  
27.             String sdStatus = Environment.getExternalStorageState();  
28.             if (!sdStatus.equals(Environment.MEDIA_MOUNTED)) { // 检测sd是否可用  
29.                 Log.i("TestFile",  
30.                         "SD card is not avaiable/writeable right now.");  
31.                 return;  
32.             }  
33.             String name = new DateFormat().format("yyyyMMdd_hhmmss",Calendar.getInstance(Locale.CHINA)) + ".jpg";     
34.             Toast.makeText(this, name, Toast.LENGTH_LONG).show();  
35.             Bundle bundle = data.getExtras();  
36.             Bitmap bitmap = (Bitmap) bundle.get("data");// 获取相机返回的数据，并转换为Bitmap图片格式  
37.           
38.             FileOutputStream b = null;  
39.            //???????????????????????????????为什么不能直接保存在系统相册位置呢？？？？？？？？？？？？  
40.             File file = new File("/sdcard/myImage/");  
41.             file.mkdirs();// 创建文件夹  
42.             String fileName = "/sdcard/myImage/"+name;  
43.   
44.             try {  
45.                 b = new FileOutputStream(fileName);  
46.                 bitmap.compress(Bitmap.CompressFormat.JPEG, 100, b);// 把数据写入文件  
47.             } catch (FileNotFoundException e) {  
48.                 e.printStackTrace();  
49.             } finally {  
50.                 try {  
51.                     b.flush();  
52.                     b.close();  
53.                 } catch (IOException e) {  
54.                     e.printStackTrace();  
55.                 }  
56.             }  
57.             ((ImageView) findViewById(R.id.imageView)).setImageBitmap(bitmap);// 将图片显示在ImageView里  
58.         }  
59.     }  
60. }