Android Open Source - HtcBugRepro Dynamic Web View

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License

The source code is released under:

This is free and unencumbered software released into the public domain. Anyone is free to copy, modify, publish, use, compile, sell, or distribute this software, either in source code form or as a co...

Java Source Code

package com.beardedcomputing.htcbugrepro;
/*from www.j  a va2  s  . c o  m*/
import android.os.Build;
import android.os.Bundle;
import android.os.Handler;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.graphics.Color;
import android.view.Menu;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewGroup;
import android.view.WindowManager;
import android.webkit.WebSettings;
import android.webkit.WebView;
import android.webkit.WebSettings.PluginState;
import android.widget.LinearLayout;
import android.util.Log;

@SuppressLint("SetJavaScriptEnabled")
public class DynamicWebView extends Activity {
  private Handler handler;
  private WebView webview;
  private static final String TAG = "DynamicWebView";

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_dynamic_web_view);
    
    handler = new Handler();
  }
  
  @Override
  public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.dynamic_web_view, menu);
    return true;
  }
  
  @SuppressWarnings("deprecation")
  @Override
  public void onStart() {
    super.onStart();
    
    if (webview != null) {
      return;
    }
    
    this.findViewById(R.id.progressBar1).setVisibility(View.GONE);
    
    webview = instantiateWebView();
    disableHardwareAccel(webview);
    webview.resumeTimers();
    
    LinearLayout layout = (LinearLayout) this.findViewById(R.id.webviewLayout);
    layout.addView(webview, ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT);
    layout.getRootView().requestLayout();
    
    webview.setBackgroundColor(Color.WHITE);
         webview.getSettings().setJavaScriptEnabled(true); // receives warning about XSS vuln., suppressed above
        webview.getSettings().setLoadWithOverviewMode(true);
        webview.getSettings().setUseWideViewPort(true);
        webview.getSettings().setSavePassword(false); // deprecated in 18 due to password save going away in 19
        webview.getSettings().setSaveFormData(false);
        webview.getSettings().setJavaScriptCanOpenWindowsAutomatically(false);
        webview.getSettings().setCacheMode(WebSettings.LOAD_NO_CACHE);
        webview.getSettings().setSupportMultipleWindows(false);
        webview.getSettings().setPluginState(PluginState.OFF); // deprecated in 18 due to plugins going away in 19
        webview.getSettings().setBuiltInZoomControls(true);
        webview.getSettings().setDisplayZoomControls(false);
        
        handler.post(new Runnable() {
      @Override
          public void run() {
            webview.loadUrl("file:///android_asset/index.html");
          }
        });
        
        Log.d(TAG, "added WebView to layout, loading page");
  }
    
    private void enableHardwareAccel() {
    Log.i(TAG, "enabling hardware accel. for window");
    this.getWindow().setFlags(
          WindowManager.LayoutParams.FLAG_HARDWARE_ACCELERATED,
          WindowManager.LayoutParams.FLAG_HARDWARE_ACCELERATED);
    }

    private void disableHardwareAccel(WebView view) {
    Log.d(TAG, "will enable hardware accel. for window but disable for webview");
    enableHardwareAccel();
    Log.d(TAG, "selectively disabling hardware accel. for webview");
    view.setLayerType(View.LAYER_TYPE_SOFTWARE, null);
    }
  
    private WebView instantiateWebView() {
      WebView wv = new WebView(this);
    
    //Workaround for https://code.google.com/p/android/issues/detail?id=7189
    if (Build.VERSION.SDK_INT < Build.VERSION_CODES.GINGERBREAD)
    {
      Log.d(TAG, "enabling newage HTC bugfix");
      wv.setOnTouchListener(new View.OnTouchListener() {
              @Override
              public boolean onTouch(View v, MotionEvent event) {
                  switch (event.getAction()) {
                      case MotionEvent.ACTION_DOWN:
                      case MotionEvent.ACTION_UP:
                        Log.d(TAG, "applied newage HTC bugfix");
                          if (!v.hasFocus()) {
                              v.requestFocus();
                          }
                          break;
                  }
                  return false;
              }
          });
    }
    
    return wv;
    }
}

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