这是一个有点奇怪的问题,但好奇心是最好的老师,我渴望知道并开发这种类型的安卓应用程序。
我的背景在安卓应用程序开发方面不是很出色,但现在我正在使用WebView浏览网站,它具有响应式设计,虽然工作良好,但加载时间太长,给用户带来不便。以下是我的代码:
MainActivity
package com.testWebview.deep;
import android.app.AlertDialog;
import android.app.ProgressDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.graphics.Bitmap;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.net.Uri;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.webkit.WebSettings;
import android.webkit.WebView;
import android.webkit.WebViewClient;
public class MainActivity extends AppCompatActivity {
private WebView webview;
private ProgressDialog progress;
public void runTask(){
ConnectivityManager connec = (ConnectivityManager)getSystemService(Context.CONNECTIVITY_SERVICE);
if(connec!=null && (connec.getNetworkInfo(ConnectivityManager.TYPE_WIFI).getState() == NetworkInfo.State.CONNECTED) || (connec.getNetworkInfo(ConnectivityManager.TYPE_MOBILE).getState() == NetworkInfo.State.CONNECTED)){
webview = (WebView)findViewById(R.id.MainWebView);
WebSettings webSettings = webview.getSettings();
webSettings.setJavaScriptEnabled(true);
webSettings.setLoadsImagesAutomatically(true);
webSettings.setLoadWithOverviewMode(true);
webSettings.setDomStorageEnabled(true);
webSettings.setCacheMode(WebSettings.LOAD_CACHE_ELSE_NETWORK);
webSettings.setAllowFileAccess(true);
webSettings.setBuiltInZoomControls(true);
webSettings.setUseWideViewPort(true);
loadingC();
webview.setWebViewClient(new WebViewClient(){
@Override
public void onPageStarted(WebView view, String url,Bitmap favicon){
if(!progress.isShowing()){
loadingC();
}
}
@Override
public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) {
if(progress.isShowing()){progress.dismiss();}
checkConnection();
webview.loadUrl("file:///android_asset/error.html");
}
@Override
public void onPageFinished(WebView view, String url) {
if(progress.isShowing()) {
progress.dismiss();
}
}
});
webview.setScrollBarStyle(WebView.SCROLLBARS_OUTSIDE_OVERLAY);
webview.setScrollbarFadingEnabled(false);
webview.setLayerType(View.LAYER_TYPE_HARDWARE, null);
webview.loadUrl("http://www.bharatcoupons.com/");
}
else{
checkConnection();
}
}
public void checkConnection(){
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setTitle("Error");
builder.setMessage("Please make sure your connected to internet!");
builder.setCancelable(false);
builder.setPositiveButton("retry", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
runTask();
}
});
builder.show();
}
public void loadingC(){
progress = ProgressDialog.show(this, "Loading", "Please wait for a moment...");
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
runTask();
}
@Override
public void onBackPressed(){
if(webview.canGoBack()){
webview.goBack();
}else{
super.onBackPressed();
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
private class MyAppWebViewClient extends WebViewClient{
}
}
MyAppWebViewClient
package com.testWebview.deep;
import android.content.Intent;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.net.Uri;
public class MyAppWebViewClient extends WebViewClient{
@Override
public boolean shouldOverrideUrlLoading(WebView view, String url){
if(Uri.parse(url).getHost().endsWith("bharatcoupons.com")){
return false;
}
Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse(url));
view.getContext().startActivity(intent);
return true;
}
}
以上代码在webview中运行良好,但它是一种开发Android应用程序的缓慢且不专业的方式。现在我想做的是获取网站内容并将其放入我想要的应用程序框架中。我将向您展示一个示例,它将详细说明我想要做的所有事情。
假设我的网站是这样的:
![An website](https://istack.dev59.com/4Gu0g.webp)
![enter image description here](https://istack.dev59.com/g0z10.webp)
他们制作了这样的框架,可以从网站中获取内容并将其放入应用程序中。我也想这样做。
我不需要代码,但我应该从哪里开始?我应该使用什么样的方法或技术来实现这一点。
参考网站和应用仅供教育目的,没有其他意图。谢谢!