Java 当我更改屏幕方向时,如何控制android webview活动的更改?
当我改变屏幕方向时,我的web视图会自动到达主页。我想让我的网络视图活动,以防止重新启动活动时,我做了屏幕方向的变化。请告诉我怎么做。对不起,我的英语很差。使用Java 当我更改屏幕方向时,如何控制android webview活动的更改?,java,android,android-studio,android-webview,screen-orientation,Java,Android,Android Studio,Android Webview,Screen Orientation,当我改变屏幕方向时,我的web视图会自动到达主页。我想让我的网络视图活动,以防止重新启动活动时,我做了屏幕方向的变化。请告诉我怎么做。对不起,我的英语很差。使用savedInstanceState。仅当url为空时加载该url import android.app.Activity; import android.app.AlertDialog; import android.content.Context; import android.content.DialogInterface; imp
savedInstanceState
。仅当url为空时加载该url
import android.app.Activity;
import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.res.Configuration;
import android.graphics.Bitmap;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.os.Bundle;
import android.support.v4.widget.SwipeRefreshLayout;
import android.support.v4.widget.SwipeRefreshLayout.OnRefreshListener;
import android.support.v7.app.ActionBar;
import android.support.v7.app.ActionBarActivity;
import android.view.KeyEvent;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.webkit.WebChromeClient;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.widget.ProgressBar;
import com.gc.materialdesign.views.ProgressBarDeterminate;
import java.util.logging.Handler;
import javax.security.auth.Destroyable;
/**
* Created by myozawoo on 4/9/15.
*/
public class HomeActivity extends ActionBarActivity{
WebView wv;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_webview);
wv = (WebView) findViewById(R.id.myWeb);
wv.getSettings().setJavaScriptEnabled(true);
wv.getSettings().setJavaScriptCanOpenWindowsAutomatically(true);
wv.getSettings().setDomStorageEnabled(true);
wv.setWebViewClient(new MyWebViewClient());
wv.setWebChromeClient(new MyWebChromeClient());
wv.loadUrl("http://www.mmcloudschooling.com");
}
@Override
protected void onRestoreInstanceState(Bundle savedInstanceState)
{
super.onRestoreInstanceState(savedInstanceState);
wv.restoreState(savedInstanceState);
}
@Override
public void onBackPressed() {
if (wv.canGoBack()) {
wv.goBack();
} else {
finish();
}
}
private class MyWebViewClient extends WebViewClient {
@Override
public void onPageStarted(WebView view, String url, Bitmap favicon) {
// TODO Auto-generated method stub
super.onPageStarted(view, url, favicon);
ProgressBarDeterminate pb = (ProgressBarDeterminate) findViewById(R.id.progress);
pb.setVisibility(ProgressBarDeterminate.VISIBLE);
}
@Override
public void onPageFinished(WebView view, String url) {
// TODO Auto-generated method stub
super.onPageFinished(view, url);
ProgressBarDeterminate pb = (ProgressBarDeterminate) findViewById(R.id.progress);
pb.setVisibility(ProgressBarDeterminate.GONE);
}
}
private class MyWebChromeClient extends WebChromeClient {
@Override
public void onProgressChanged(WebView view, int newProgress) {
ProgressBarDeterminate pb = (ProgressBarDeterminate) findViewById(R.id.progress);
pb.setProgress(newProgress);
super.onProgressChanged(view, newProgress);
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.menu_main, menu);
return super.onCreateOptionsMenu(menu);
}
@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) {
wv.reload();
return true;
}
return super.onOptionsItemSelected(item);
}
}
谢谢,这很酷,很管用。当我更改屏幕方向时,家庭活动无法到达。但它会再次刷新网页。我可以在不刷新当前网页的情况下更改屏幕方向吗。无论如何,非常感谢你,兄弟。:-)嗯……真奇怪。这也应该停止页面刷新。在AndroidManifest文件中,尝试将
android:configChanges=“keyboardHidden | orientation | screenSize”
添加到包含webView的活动标记中。我已稍微编辑了我的答案(如果有其他条件)。看看它是否有效。
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_webview);
wv = (WebView) findViewById(R.id.myWeb);
wv.getSettings().setJavaScriptEnabled(true);
wv.getSettings().setJavaScriptCanOpenWindowsAutomatically(true);
wv.getSettings().setDomStorageEnabled(true);
wv.setWebViewClient(new MyWebViewClient());
wv.setWebChromeClient(new MyWebChromeClient());
if (savedInstanceState == null)
{
wv.loadUrl("http://www.mmcloudschooling.com");
} else {
wv.restoreState(savedInstanceState);
}
}
@Override
protected void onSaveInstanceState(Bundle outState )
{
super.onSaveInstanceState(outState);
wv.saveState(outState);
}
@Override
protected void onRestoreInstanceState(Bundle savedInstanceState)
{
super.onRestoreInstanceState(savedInstanceState);
wv.restoreState(savedInstanceState);
}