调用Android installer 安装和卸载程序

Intent intent = new Intent(Intent.ACTION_VIEW);        
             intent.setDataAndType(Uri.fromFile(new File("/sdcard/WorldCupTimer.apk")), "application/vnd.android.package-archive");        
             startActivity(intent); //安装程序        
                

        
             Uri packageURI = Uri.parse("package:zy.dnh");                
             Intent uninstallIntent = new Intent(Intent.ACTION_DELETE, packageURI);                
             startActivity(uninstallIntent);//正常卸载程序    


Intent intent = new Intent(Intent.ACTION_VIEW);    
                intent.setDataAndType(Uri.fromFile(new File("/sdcard/WorldCupTimer.apk")), "application/vnd.android.package-archive");    
                startActivity(intent); //安装程序
                
                Uri packageURI = Uri.parse("package:zy.dnh");            
                Intent uninstallIntent =    
new Intent(Intent.ACTION_DELETE,packageURI);            
                startActivity(uninstallIntent);//正常卸载程序