1、root权限静默安装实现

实现实际使用的是su pm install -r filePath命令。核心代码如下：

protected static void excuteSuCMD() {  		 Process process = null; 		    OutputStream out = null; 		    InputStream in = null; 		    String currentTempFilePath = "/sdcard/QQ.apk";		    try { 		    // 请求root 		    process = Runtime.getRuntime().exec("su");  		    out = process.getOutputStream(); 		    // 调用安装 		    out.write(("pm install -r " + currentTempFilePath + "\n").getBytes()); 		    in = process.getInputStream(); 		    int len = 0; 		    byte[] bs = new byte[256]; 		    while (-1 != (len = in.read(bs))) { 		    String state = new String(bs, 0, len); 		    if (state.equals("Success\n")) { 		       //安装成功后的操作 		         } 		       } 		    } catch (IOException e) { 		        e.printStackTrace(); 		    } catch (Exception e) { 		        e.printStackTrace(); 		    } finally { 		        try { 		            if (out != null) { 		                out.flush(); 		                out.close(); 		            } 		            if (in != null) { 		                in.close(); 		            } 		        } catch (IOException e) { 		            e.printStackTrace(); 		        } 		    } 	 }

2、非root权限提示用户安装，代码如下：

public static void openFile() {          // 核心是下面几句代�?          if (!isHasfile()) {              downLoadFile(url);          }          Intent intent = new Intent();          intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);          intent.setAction(android.content.Intent.ACTION_VIEW);          intent.setDataAndType(                  Uri.fromFile(new File("/sdcard/update/updata.apk")),                  "application/vnd.android.package-archive");          mContext.startActivity(intent);      }