向线性布局中动态添加textview出现闪退，代码如下，这是什么原因？？

Question

protected void onActivityResult(int requestCode, int resultCode, Intent data) {
// TODO Auto-generated method stub
switch (requestCode) {
case 1:
if(resultCode==RESULT_OK){
personalNumber=data.getStringExtra("personal");
allow=1;
Log.d("TestActivity", personalNumber);

            linearToLogin = (LinearLayout) findViewById(R.id.ll_to_login);
            TextView firstTextView=new TextView(this);
            firstTextView.setText("尊敬的：  "+personalNumber);
            firstTextView.setTextSize(16);
            firstTextView.setGravity(Gravity.CENTER_HORIZONTAL);
            LinearLayout.LayoutParams view01Params = new LinearLayout.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT,
                      ViewGroup.LayoutParams.WRAP_CONTENT);
            ((ViewGroup) firstTextView.getParent()).removeView(firstTextView);
             linearToLogin.addView(firstTextView,view01Params);

            TextView welcomeTextView=new TextView(this);
            welcomeTextView.setText("欢迎使用畅心停车");
            welcomeTextView.setTextSize(16);
            welcomeTextView.setGravity(Gravity.CENTER_HORIZONTAL);
            LinearLayout.LayoutParams view02Params = new LinearLayout.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT,
                      ViewGroup.LayoutParams.WRAP_CONTENT);
            ((ViewGroup) welcomeTextView.getParent()).removeView(welcomeTextView);
             linearToLogin.addView(firstTextView,view02Params);
             Log.d("TestActivity布局", "填加完成");
        }
        break;

    default:
        break;
    }

    这是logcat

_

Answer 1

请看一下你的TestActivity中的第83行代码，那一行出现了空指针异常，先把空指针异常处理了，应该就没事了。
一般情况下，出现error的话，都需要先找到错误的地方，一般都是看Caused by:......的下一行，会指出你的那一行代码出了什么问题，然后就可以去解决相应的异常！