无法解决充气机和容器

debugcn 发表于 Dev

拉胡尔

为什么在我的活动中“充气机和容器”没有解决？我应该怎么写？

import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.KeyEvent;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.webkit.WebChromeClient;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.widget.ProgressBar;

public class GamesFragment extends Fragment {

private ProgressBar progress;
private WebView myWebView;


@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
                         Bundle savedInstanceState) {
    myUIUpdate();
    return null;
}

private void myUIUpdate() {
    View rootView = inflater.inflate(R.layout.fragment_games, container, false);


    String url = "http://gsmarena.com";
    myWebView = (WebView) rootView.findViewById(R.id.webViewGames);
    myWebView.setWebChromeClient(new myWebViewClient());
    myWebView.getSettings().setJavaScriptEnabled(true);
    progress = (ProgressBar) rootView.findViewById(R.id.progressBar);
    myWebView.loadUrl(url);
    progress.setMax(100);


    myWebView.setWebViewClient(new WebViewClient() {

        @Override
        public boolean shouldOverrideUrlLoading(WebView View, String url) {
            View.loadUrl(url);
            GamesFragment.this.progress.setProgress(0);
            return true;
        }

    });


    myWebView.setOnKeyListener(new android.view.View.OnKeyListener()

    {
        @Override
        public boolean onKey(View v, int keyCode, KeyEvent event) {
            if (event.getAction() == KeyEvent.ACTION_DOWN) {
                WebView webView = (WebView) v;

                switch (keyCode) {
                    case KeyEvent.KEYCODE_BACK:
                        if (webView.canGoBack()) {
                            webView.goBack();
                            return true;
                        }
                        break;
                }
            }

            return false;
        }
    });
    return rootView;

}


private class myWebViewClient extends WebChromeClient {
    @Override
    public void onProgressChanged(WebView view, int newProgress) {
        GamesFragment.this.setValue(newProgress);
        super.onProgressChanged(view, newProgress);
    }
}

@Override
public void setUserVisibleHint(boolean visible) {
    super.setUserVisibleHint(visible);
    if (visible && isResumed()) {
        myUIUpdate();
    }
}

public void setValue(int progress) {
    this.progress.setProgress(progress);
}


}

我正在尝试附加myUIUdate，因为使用此命令在屏幕上不可见时隐藏了我的片段：

@Override
public void setUserVisibleHint(boolean visible) {
    super.setUserVisibleHint(visible);
    if (visible && isResumed()) {
        myUIUpdate();
    }
    }

PS：如果有人有更好的主意隐藏片段，我喜欢听。

吉鲁·拜

Bacause的myUIUpdate()方法却没有发现inflater和container.Therfore在onCreateView写myUIUpdate（）; 作为

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
                         Bundle savedInstanceState) {
    myUIUpdate(inflater,container);
}

并更改为（return type也更改为）

private void myUIUpdate() {

到

private View myUIUpdate(LayoutInflater inflater, ViewGroup container) {

编辑myUIUpdate在onViewCreated方法中写入，然后从onCreateView中删除为

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
    View rootView = inflater.inflate(R.layout.fragment_games, container, false);
    return rootView;
}


@Override
public void onViewCreated(View view, @Nullable Bundle savedInstanceState) {
    super.onViewCreated(view, savedInstanceState);
    myUIUpdate(view);
}

并将myUIUpdate方法重写为

private void myUIUpdate(View view) {
    String url = "http://gsmarena.com";
    myWebView = (WebView) view.findViewById(R.id.webViewGames);
    myWebView.setWebChromeClient(new myWebViewClient());
    myWebView.getSettings().setJavaScriptEnabled(true);
    progress = (ProgressBar) view.findViewById(R.id.progressBar);
    myWebView.loadUrl(url);
    progress.setMax(100);

    myWebView.setWebViewClient(new WebViewClient() {

        @Override
        public boolean shouldOverrideUrlLoading(WebView View, String url) {
            View.loadUrl(url);
            GamesFragment.this.progress.setProgress(0);
            return true;
        }

    });

    myWebView.setOnKeyListener(new android.view.View.OnKeyListener() {@Override
        public boolean onKey(View v, int keyCode, KeyEvent event) {
            if (event.getAction() == KeyEvent.ACTION_DOWN) {
                WebView webView = (WebView) v;

                switch (keyCode) {
                    case KeyEvent.KEYCODE_BACK:
                        if (webView.canGoBack()) {
                            webView.goBack();
                            return true;
                        }
                        break;
                }
            }
            return false;
        }
    });
}

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