我希望从另一个片段调用一个方法,但它一直告诉我我的 TextViews 的值为 null ..?
玩家1:
public class PlayerTurn1 extends Fragment {
TextView p1Name;
TextView p1Icon;
Button doneP1;
Button resetP1;
EditText row;
EditText column;
TicTacToeLayout myObject = new TicTacToeLayout();
ArrayList<String> player1;
Bundle extras = new Bundle();
int turn = 1;
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
extras = getArguments();
player1 = new ArrayList<String>(extras.getStringArrayList("player1"));
Toast.makeText(getActivity(), player1.get(0), Toast.LENGTH_LONG).show();//Name of the player
Toast.makeText(getActivity(), player1.get(1), Toast.LENGTH_LONG).show();//Icon chosen by the player
row = (EditText) getActivity().findViewById(R.id.rowP1);
column = (EditText) getActivity().findViewById(R.id.columnP1);
p1Name = (TextView) getActivity().findViewById(R.id.p1NameInfo);
p1Icon = (TextView) getActivity().findViewById(R.id.p1IconInfo);
doneP1 = (Button) getActivity().findViewById(R.id.doneP1);
resetP1 = (Button) getActivity().findViewById(R.id.resetP2);
setPlayer();
doneP1.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
if(checkField() != false)
{
int rowValueInt = Integer.parseInt(row.getText().toString());
int colValueInt = Integer.parseInt(column.getText().toString());
myObject.play(rowValueInt, colValueInt, player1.get(1));
callPlayer2Fragment();
}
}
});
}
player 2 片段是完全相同的代码,所以我不会费心添加它。
TicTacToeLayout 片段类:
public class TicTacToeLayout extends Fragment {
TextView image1, image2, image3, image4, image5, image6, image7, image8, image9;
TextView[][] images;
public View onCreateView(LayoutInflater inflater,
ViewGroup container, Bundle savedInstanceState) {
return inflater.inflate(R.layout.tictactoe_layout, container, false);
}
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
image1 = (TextView) getActivity().findViewById(R.id.Image1);
image2 = (TextView) getActivity().findViewById(R.id.Image2);
image3 = (TextView) getActivity().findViewById(R.id.Image3);
image4 = (TextView) getActivity().findViewById(R.id.Image4);
image5 = (TextView) getActivity().findViewById(R.id.Image5);
image6 = (TextView) getActivity().findViewById(R.id.Image6);
image7 = (TextView) getActivity().findViewById(R.id.Image7);
image8 = (TextView) getActivity().findViewById(R.id.Image8);
image9 = (TextView) getActivity().findViewById(R.id.Image9);
images = new TextView[][]{ {image1, image2, image3},
{image4, image5, image6},
{image7, image8, image9} };
toast();
}
public void toast()
{
Toast.makeText(getActivity(), images[0][0].getText().toString(), Toast.LENGTH_LONG).show();
Toast.makeText(getActivity(), images[0][1].getText().toString(), Toast.LENGTH_LONG).show();
Toast.makeText(getActivity(), images[0][2].getText().toString(), Toast.LENGTH_LONG).show();
Toast.makeText(getActivity(), images[1][0].getText().toString(), Toast.LENGTH_LONG).show();
}
public void play(int row, int column, String icon)
{
images[row-1][column-1].setText(icon);
}
}
我只是做了一个方法来尝试烤面包,以确保数组中有东西并且它有效。但是,它仅在创建片段时才进行烘烤。不知何故,在方法调用之后 myObject.play(rowValueInt, colValueInt, player1.get(1));
,调试器告诉我我的图像的所有值都是空的。
这是调试器所说的:
this TicTacToeLayout (id=830016401072)
image1 null
image2 null
image3 null
image4 null
image5 null
image6 null
image7 null
image8 null
image9 null
images null
row 1
column 2
icon "O" (id=830016398920)
这基本上发生在我单击完成按钮时。应该发生的是当玩家点击按钮时,在 TicTacToeLayout 片段中,位于玩家输入的任何行和列的文本视图更改为 X 或 O。行、列和图标都有各自的值,但图像在调用对象后最终为 null。有任何想法吗?我的帖子已关闭,因为显然我没有提供太多信息并且管理员很生气,所以如果您需要其他任何内容,请告诉我我会更新。
EDIT 调用位于 PlayerTurn1 中的第二个玩家片段
public void callPlayer2Fragment()
{
FragmentManager fm = getFragmentManager();
FragmentTransaction ft = fm.beginTransaction();
Fragment Player2Frag = new PlayerTurn2();
Player2Frag.setArguments(extras);
ft.replace(R.id.fragment_container, Player2Frag);
ft.commit();
}
单击完成按钮时,将调用 PlayerTurn2 片段并从此类传递参数,但该片段被替换。
XML 布局
<?xml version="1.0" encoding="UTF-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="horizontal" >
<FrameLayout
android:id="@+id/fragment_container"
android:layout_width="0px"
android:layout_height="match_parent"
android:layout_weight="1" />
<fragment
android:id="@+id/frag2"
android:name="As2.packageTK.TicTacToeLayout"
android:layout_width="0px"
android:layout_height="match_parent"
android:layout_weight="1" />
</LinearLayout>