Android程序使用代码的安装和卸载！！！
1 public class MainActivity extends Activity { 2 3 private String currentFilePath = "", currentTempFilePath = "", strURL = "", 4 fileEx = "", fileNa = ""; 5 File file2 = new File(Environment.getExternalStorageDirectory()+""); 6 @SuppressLint("SetJavaScriptEnabled") 7 @Override 8 public void onCreate(Bundle savedInstanceState) { 9 super.onCreate(savedInstanceState); 10 setContentView(R.layout.activity_main); 11 fragmentLayout = (View) findViewById(R.id.fragment); 12 gotoButton = (Button) findViewById(R.id.goto_button); 13 gotoButton.setOnClickListener(gotoListener); 14 } 15 16 OnClickListener gotoListener = new OnClickListener() { 17 18 @Override 19 public void onClick(View v) { 20 21 // String webUrl = "http://fancy.189.cn/portal/getclientapk"; 22 // Uri uri = Uri.parse(webUrl); 23 // Intent intent = new Intent(Intent.ACTION_VIEW, uri); 24 // startActivity(intent); 25 // finish();
26 strURL = "http://fancy.189.cn/portal/getclientapk"; 27 /* 取得欲安装程序名称 */
28 fileEx = "telecom_mdesk"; 29 fileNa = ".apk"; 30 getFile(strURL); 31 } 32 }; 33 34 /* 处理下载URL文件自定义函数 */
35 private void getFile(final String strPath) { 36 try { 37 if (strPath.equals(currentFilePath)) { 38 getDataSource(strPath); 39 } 40 currentFilePath = strPath; 41 Runnable r = new Runnable() { 42 public void run() { 43 try { 44 getDataSource(strPath); 45 } catch (Exception e) { 46 Log.e("TAG", e.getMessage(), e); 47 Log.e("TAG", "------>"); 48 } 49 } 50 }; 51 new Thread(r).start(); 52 } catch (Exception e) { 53 e.printStackTrace(); 54 } 55 } 56 57 /* 取得远程文件 */
58 private void getDataSource(String strPath) throws Exception { 59 // if (!URLUtil.isNetworkUrl(strPath)) 60 // mTextView01.setText("错误的URL"); 61 // else 62 // {
63 /* 取得URL */
64 URL myURL = new URL(strPath); 65 /* 创建连接 */
66 //URLConnection conn = myURL.openConnection();
67 HttpURLConnection conn = (HttpURLConnection) myURL.openConnection(); 68 conn.setRequestMethod("POST"); 69 // is = connection.getInputStream(); 70 //conn.connect();
71 /* InputStream 下载文件 */
72 InputStream is = conn.getInputStream(); 73 if (is == null) 74 throw new RuntimeException("stream is null"); 75 76 /* 创建临时文件 */
77 File myTempFile = File.createTempFile(fileEx, fileNa, file2); 78 /* 取得临时文件路径 */
79 currentTempFilePath = myTempFile.getAbsolutePath(); 80 /* 将文件写入暂存盘 */
81 FileOutputStream fos = new FileOutputStream(myTempFile); 82 byte buf[] = new byte[128]; 83 do { 84 int numread = is.read(buf); 85 if (numread <= 0) 86 break; 87 88 Log.v("TAG", "下载中---"); 89 90 fos.write(buf, 0, numread); 91 } while (true); 92 93 /* 打开文件进行安装 */
94 openFile(myTempFile); 95 try { 96 is.close(); 97 } catch (Exception ex) { 98 Log.e("TAG", "error: " + ex.getMessage(), ex); 99 } 100 // }
101 } 102 103 /** 104 * 在手机上打开文件 105 */
106 private void openFile(File f) { 107 Intent intent = new Intent(); 108 intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); 109 intent.setAction(android.content.Intent.ACTION_VIEW); 110 111 /* 调用getMIMEType()来取得MimeType */
112 String type = "application/vnd.android.package-archive"; 113 /* 设置intent的file与MimeType */
114 intent.setDataAndType(Uri.fromFile(f), type); 115 startActivity(intent); 116 } 117 }
安装：
1 String str = "/CanavaCancel.apk"; 2 String fileName = Environment.getExternalStorageDirectory() + str; 3 Intent intent = new Intent(Intent.ACTION_VIEW); 4 intent.setDataAndType(Uri.fromFile(new File(fileName)), "application/vnd.android.package-archive"); 5 startActivity(intent);
卸载：
1 Uri packageURI = Uri.parse("package:com.demo.CanavaCancel"); 2 Intent uninstallIntent = new Intent(Intent.ACTION_DELETE, packageURI); 3 startActivity(uninstallIntent);
Environment拥有一些可以获取环境变量的方法
package:com.demo.CanavaCancel 这个形式是 package:程序完整的路径 (包名+程序名)。
下载apk程序代码：
1 protected File downLoadFile(String httpUrl) { 2 // TODO Auto-generated method stub
3 final String fileName = "updata.apk"; 4 File tmpFile = new File("/sdcard/update"); 5 if (!tmpFile.exists()) { 6 tmpFile.mkdir(); 7 } 8 final File file = new File("/sdcard/update/" + fileName); 9
10 try { 11 URL url = new URL(httpUrl); 12 try { 13 HttpURLConnection conn = (HttpURLConnection) url 14 .openConnection(); 15 InputStream is = conn.getInputStream(); 16 FileOutputStream fos = new FileOutputStream(file); 17 byte[] buf = new byte[256]; 18 conn.connect(); 19 double count = 0; 20 if (conn.getResponseCode() >= 400) { 21 Toast.makeText(Main.this, "连接超时", Toast.LENGTH_SHORT) 22 .show(); 23 } else { 24 while (count <= 100) { 25 if (is != null) { 26 int numRead = 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 return file; 55 }
打开APK程序代码：
1 private void openFile(File file) { 2 // TODO Auto-generated method stub
3 Log.e("OpenFile", file.getName()); 4 Intent intent = new Intent(); 5 intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); 6 intent.setAction(android.content.Intent.ACTION_VIEW); 7 intent.setDataAndType(Uri.fromFile(file), 8 "application/vnd.android.package-archive"); 9 startActivity(intent); 10 }