判断手机里面是否装有某个应用

[android]代码库

//读取报名，判断某app是否装在移动设备上
public static void uninstallSoftware(Context context, String packageName) {  
    PackageManager packageManager = context.getPackageManager();  
    try {  
        PackageInfo pInfo = packageManager.getPackageInfo(packageName,  
                PackageManager.COMPONENT_ENABLED_STATE_DEFAULT); 
        //判断是否获取到了对应的包名信息 
        if(pInfo!=null){  
            return true;
        }  
    } catch (NameNotFoundException e) {  
        e.printStackTrace();  
    }  
    return false;
} 
//判断某app是否装在移动设备上，如果已经存在，则卸载
public static void uninstallSoftware(Context context, String packageName) {  
    PackageManager packageManager = context.getPackageManager();  
    try {  
        PackageInfo pInfo = packageManager.getPackageInfo(packageName,  
                PackageManager.COMPONENT_ENABLED_STATE_DEFAULT); 
        //在这里也是判断当前应用是否安装 
        if(pInfo!=null){  
            //删除软件  
            Uri uri = Uri.parse("package:"+ name);  
            Intent intent = new Intent(Intent.ACTION_DELETE, uri);  
            context.startActivity(intent);  
        }  
    } catch (NameNotFoundException e) {  
        e.printStackTrace();  
    }  
}