Android實現應用下載並自動安裝apk包

安裝：

1	String str = "/CanavaCancel.apk";

2	String fileName = Environment.getExternalStorageDirectory() + str;

3	Intent intent = newIntent(Intent.ACTION_VIEW);

4	intent.setDataAndType(Uri.fromFile(newFile(fileName)), "application/vnd.android.package-archive");

5	startActivity(intent);

卸載：

1	Uri packageURI = Uri.parse("package:com.demo.CanavaCancel");

2	Intent uninstallIntent = newIntent(Intent.ACTION_DELETE, packageURI);

3	startActivity(uninstallIntent);

Environment擁有一些可以獲取環境變量的方法

package:com.demo.CanavaCancel 這個形式是 package:程序完整的路徑 (包名+程序名).

//下載apk程序代碼

查看源碼

打印?

01	protectedFile downLoadFile(String httpUrl) {

02	// TODO Auto-generated method stub

03	finalString fileName = "updata.apk";

04	File tmpFile = newFile("/sdcard/update");

05	if(!tmpFile.exists()) {

06	tmpFile.mkdir();

07

}

08	finalFile file = newFile("/sdcard/update/"+ fileName);

09

10

try{

11	URL url = newURL(httpUrl);

12

try{

13	HttpURLConnection conn = (HttpURLConnection) url

14	.openConnection();

15	InputStream is = conn.getInputStream();

16	FileOutputStream fos = newFileOutputStream(file);

17	byte[] buf = newbyte[256];

18	conn.connect();

19	doublecount = 0;

20	if(conn.getResponseCode() >= 400) {

21	Toast.makeText(Main.this, "連接超時", Toast.LENGTH_SHORT)

22

.show();

23

} else{

24	while(count <= 100) {

25	if(is != null) {

26	intnumRead = is.read(buf);

27	if(numRead <= 0) {

28

break;

29

} else{

30	fos.write(buf, 0, numRead);

31

}

32

33

} else{

34

break;

35

}

36

37

}

38

}

39

40	conn.disconnect();

41	fos.close();

42	is.close();

43	} catch(IOException e) {

44	// TODO Auto-generated catch block

45

46	e.printStackTrace();

47

}

48	} catch(MalformedURLException e) {

49	// TODO Auto-generated catch block

50

51	e.printStackTrace();

52

}

53

54	returnfile;

55

}

56	//打開APK程序代碼

57

58	privatevoidopenFile(File file) {

59	// TODO Auto-generated method stub

60	Log.e("OpenFile", file.getName());

61	Intent intent = newIntent();

62	intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);

63	intent.setAction(android.content.Intent.ACTION_VIEW);

64	intent.setDataAndType(Uri.fromFile(file),

65	"application/vnd.android.package-archive");

66	startActivity(intent);

67

}