更改屏幕片段后崩溃

Question

我想用捆绑包发送数据并在另一个片段中检索它们。

我的问题是当我在片段接收中更改屏幕方向时应用程序崩溃。

这是我的一段代码：

片段接收 ：

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
                         Bundle savedInstanceState) {
    View view = inflater.inflate(R.layout.fragment_actuality, container, false);
    ImageLoader imageLoader = AppController.getInstance().getImageLoader();
    ImageView networkImageView = (ImageView)view.findViewById(R.id.thumbnail);
    Bundle bundle = getArguments();
    textcontent = (TextView)view.findViewById(R.id.content);
    texttitle = (TextView)view.findViewById(R.id.title);
    textdate = (TextView)view.findViewById(R.id.date);
    textweb = (TextView)view.findViewById(R.id.web);

    textcontent.setText(Html.fromHtml(bundle.getString("article")));
    textdate.setText("le " + bundle.getString("date"));
    texttitle.setText(bundle.getString("title"));
    textweb.setText("Pour plus d'information : " + bundle.getString("urlweb")); }

Answer 1

使用捆绑包时应始终检查空

值

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
                         Bundle savedInstanceState) {
    View view = inflater.inflate(R.layout.fragment_actuality, container, false);
    ImageLoader imageLoader = AppController.getInstance().getImageLoader();
    ImageView networkImageView = (ImageView)view.findViewById(R.id.thumbnail);
        textcontent = (TextView)view.findViewById(R.id.content);
        texttitle = (TextView)view.findViewById(R.id.title);
        textdate = (TextView)view.findViewById(R.id.date);
        textweb = (TextView)view.findViewById(R.id.web);

        if(savedInstanceState!=null){  
        textcontent.setText(Html.fromHtml(bundle.getString("article")));
        textdate.setText("le " + bundle.getString("date"));
        texttitle.setText(savedInstanceState.getString("title"));
        textweb.setText("Pour plus d'information : "savedInstanceState.getString("urlweb"));
}

Answer 2

将此行添加到清单中的活动中：

android:configChanges="keyboardHidden|orientation|screenSize"

Answer 3

在轮换时，将重新创建您的片段，onCreateView()将再次调用，并且getArguments将为空。所以你需要将数据保存在onSaveInstanceState()和onCreateView()中，如果savedInstanceState为空，则添加，则从getArgument()获取数据，否则从savedInstanceState获取数据。