import android.app.AlertDialog;
import android.content.DialogInterface;

private void showMessage(String string)
     {
            new AlertDialog.Builder(mContext)
                    .setTitle("提示")
                    .setMessage(string)
                    .setNegativeButton("确定",
                            new DialogInterface.OnClickListener()
                            {
                                public void onClick(DialogInterface dialoginterface, int i)
                                {
                                    // Do something you want!!!
                                }
                            }).show();
     }