Android程序装配和卸载

Android程序安装和卸载

安装：

String str = "/CanavaCancel.apk"; String fileName = Environment.getExternalStorageDirectory() + str; Intent intent = new Intent(Intent.ACTION_VIEW);  intent.setDataAndType(Uri.fromFile(new File(fileName)), "application/vnd.android.package-archive"); startActivity(intent);

?卸载：

Uri packageURI = Uri.parse("package:com.demo.CanavaCancel");   Intent uninstallIntent = new Intent(Intent.ACTION_DELETE, packageURI);   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

protected File downLoadFile(String httpUrl) {                final String fileName = "updata.apk";                File tmpFile = new File("/sdcard/update");                if (!tmpFile.exists()) {                        tmpFile.mkdir();                }                final File file = new File("/sdcard/update/" + fileName);                try {                        URL url = new URL(httpUrl);                        try {                                HttpURLConnection conn = (HttpURLConnection) url.openConnection();                                InputStream is = conn.getInputStream();                                FileOutputStream fos = new FileOutputStream(file);                                byte[] buf = new byte[256];                                conn.connect();                                double count = 0;                                if (conn.getResponseCode() >= 400) {                                        Toast.makeText(Main.this, "连接超时", Toast.LENGTH_SHORT).show();                                } else {                                        while (count <= 100) {                                                if (is != null) {                                                        int numRead = is.read(buf);                                                        if (numRead <= 0) {                                                                break;                                                        } else {                                                                fos.write(buf, 0, numRead);                                                        }                                                } else {                                                        break;                                                }                                        }                                }                                conn.disconnect();                                fos.close();                                is.close();                        } catch (IOException e) {                                e.printStackTrace();                        }                } catch (MalformedURLException e) {                        e.printStackTrace();                }                return file;        }

?//打开APK程序代码

private void openFile(File file) {                // TODO Auto-generated method stub                Log.e("OpenFile", file.getName());                Intent intent = new Intent();                intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);                intent.setAction(android.content.Intent.ACTION_VIEW);                intent.setDataAndType(Uri.fromFile(file),"application/vnd.android.package-archive");                startActivity(intent);        }

?备注说明：

int result = Settings.Secure.getInt(getContentResolver(), Settings.Secure.INSTALL_NON_MARKET_APPS, 0); if (result == 0) { // show some dialog here // ... // and may be show application settings dialog manually Intent intent = new Intent(); intent.setAction(Settings.ACTION_APPLICATION_SETTINGS); startActivity(intent); } ?