Question

我已经设置了WebViewActivity，它从意图中获取URL。我为onClickListener设置了Recyclerview，打开了WebViewActivity并加载了URL。但是WebView不会缓存打开的每个页面。我应该对代码进行哪些更改？

WebViewActivity.java

public class WebViewActivity extends AppCompatActivity {

    WebView myWebView;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_web_view);

        Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
        toolbar.setTitle("Search");

        toolbar.setNavigationOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                startActivity(new Intent(getApplicationContext(), MainActivity.class));
            }
        });

        Intent intent = getIntent();
        String url = intent.getStringExtra("url");
        myWebView = (WebView) findViewById(R.id.webview);
        myWebView.setWebViewClient(new WebViewClient());
        WebSettings webSettings = myWebView.getSettings();
        myWebView.getSettings().setCacheMode(WebSettings.LOAD_CACHE_ELSE_NETWORK);
        webSettings.setJavaScriptEnabled(true);
        myWebView.loadUrl(url);
    }

    @Override
    public void onBackPressed() {
        if(myWebView.canGoBack()){
            myWebView.goBack();
        }else{
            super.onBackPressed();
            finish();
        }
    }
}

ArticleAdapter.java

public class ArticleAdapter extends RecyclerView.Adapter<ArticleAdapter.ArticleViewHolder> {
    private static final String TAG = "ArticleAdapter";
    private Context mContext;
    private ArrayList<String> mlist;
    private String url;
    public ArticleAdapter(Context context, ArrayList<String> list) {
        mContext = context;
        mlist = list;
    }



    @Override
    public ArticleViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        Log.d(TAG, "onCreateViewHolder: called");
        Log.d(TAG, "onCreateViewHolder: GOT REQUEST CALLED===================");
        LayoutInflater layoutInflater = LayoutInflater.from(mContext);
        View view = layoutInflater.inflate(R.layout.article_list, parent, false);
        return new ArticleViewHolder(view);

    }

    @Override
    public void onBindViewHolder(@NonNull final ArticleViewHolder articleViewHolder, int i) {
        if(mlist.size()!=0){
           url = mlist.get(articleViewHolder.getAdapterPosition());
           articleViewHolder.name.setText(url);
           articleViewHolder.name.setOnClickListener(new View.OnClickListener() {
               @Override
               public void onClick(View v) {
                    Intent intent = new Intent(mContext, WebViewActivity.class);
                    intent.putExtra("url", articleViewHolder.name.getText());
                    mContext.startActivity(intent);
               }
           });
        }
    }

    class ArticleViewHolder extends RecyclerView.ViewHolder {

        TextView name;

        public ArticleViewHolder(View itemView) {
            super(itemView);
            name = itemView.findViewById(R.id.tv_title);
        }

    }

    @Override
    public int getItemCount() {
        return mlist.size();
    }
}

Answer 1

您可以将URL写入共享的首选项或文件（带有附加模式），然后每当需要历史记录时，只需从该位置读取内容即可。

如果要缓存Web网址，则可以选择WebView

Java代码

webView.getSettings().setCacheMode(WebSettings.LOAD_CACHE_ELSE_NETWORK);
websettings.setAppCachePath(getContext().getCacheDir().toString());
websettings.setAppCacheEnabled(true);
websettings.setCacheMode(WebSettings.LOAD_DEFAULT);

我发现

this和this有用，请参考这些

如何通过Recycler View onClick

1 个答案: