我的进度对话框只有在第一次打开才有显示
都按照老师的来,怎么就是不行
都按照老师的来,怎么就是不行
2016-08-06
package com.example.webview;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import android.app.Activity;
import android.app.ProgressDialog;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.view.KeyEvent;
import android.view.Menu;
import android.view.MenuItem;
import android.webkit.WebChromeClient;
import android.webkit.WebSettings;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.widget.Toast;
public class MainActivity extends Activity {
private String url = "http://www.baibu.com/";
private WebView webView;
private ProgressDialog Dialog;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// Uri uri = Uri.parse(url);
// Intent intent = new Intent(Intent.ACTION_VIEW,uri);
// startActivity(intent);
init();
}
private void init() {
// TODO Auto-generated method stub
webView = (WebView) findViewById(R.id.webView);
webView.loadUrl(url);
webView.setWebViewClient(new WebViewClient() {
public boolean shouldOverrideUrlLoading(WebView view, String url) {
view.loadUrl(url);
return true;
}
});
WebSettings Settings = webView.getSettings();
Settings.setJavaScriptEnabled(true);
Settings.setCacheMode(WebSettings.LOAD_CACHE_ELSE_NETWORK);
webView.setWebChromeClient(new WebChromeClient() {
@Override
public void onProgressChanged(WebView view, int newProgress) {
// TODO Auto-generated method stub
if (newProgress == 100) {
closeDialog();
} else {
openDialog(newProgress);
}
super.onProgressChanged(view, newProgress);
}
private void closeDialog() {
// TODO Auto-generated method stub
if (Dialog != null && Dialog.isShowing()) {
Dialog.dismiss();
Dialog = null;
}
}
private void openDialog(int newProgress) {
// TODO Auto-generated method stub
if (Dialog == null) {
Dialog = new ProgressDialog(MainActivity.this);
Dialog.setTitle("正在加载");
Dialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
Dialog.setProgress(newProgress);
Dialog.show();
} else {
Dialog.setProgress(newProgress);
}
}
});
}
// 改写物理一次返回的按键的逻辑
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
// TODO Auto-generated method stub
if (keyCode == KeyEvent.KEYCODE_BACK) {
if (webView.canGoBack()) {
Toast.makeText(this, webView.getUrl(), Toast.LENGTH_SHORT)
.show();
webView.goBack();
return true;
} else {
System.exit(0);
}
}
return super.onKeyDown(keyCode, event);
}
}这是我的,你看一下,是不是放错位置了?或者其他的
举报