LayoutInflater inflater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE); final View scenemode = inflater.inflate(R.layout.scenemode, null); new AlertDialog.Builder(MyGridView.this) .setTitle("情景模式设置") .setView(scenemode) .setPositiveButton("ok", null) .setNegativeButton("cancle", null) .show(); /*为RadioGroup添加监听事件*/ final RadioButton rb1 = (RadioButton)findViewById(R.id.rb1); final RadioButton rb2 = (RadioButton)findViewById(R.id.rb2); final RadioButton rb3 = (RadioButton)findViewById(R.id.rb3); final RadioButton rb4 = (RadioButton).findViewById(R.id.rb4); final TextView tv = (TextView)findViewById(R.id.tv); RadioGroup rg = (RadioGroup)scenemode.findViewById(R.id.rg); rg.setOnCheckedChangeListener(new OnCheckedChangeListener() { @Overridepublic void onCheckedChanged(RadioGroup group, int checkedId) {if(checkedId == rb1.getId()){
老是报空指针异常，最后发现原来是要
final RadioButton rb1 = (RadioButton)findViewById(R.id.rb1);改为final RadioButton rb1 = (RadioButton)scenemode.findViewById(R.id.rb1);以下的几个控件都要改