Android绘制炫酷引导界面

package com.bzu.gxs.webview1;import android.app.Activity;import android.os.Build;import android.support.v7.app.AppCompatActivity;import android.os.Bundle;import android.view.KeyEvent;import android.view.Menu;import android.view.MenuItem;public class MainActivity extends Activity {  private MyWebView myWebView;  @Override  protected void onCreate(Bundle savedInstanceState) {    super.onCreate(savedInstanceState);    setContentView(R.layout.activity_main);    myWebView = (MyWebView) findViewById(R.id.webView);    myWebView.getSettings().setJavaScriptEnabled(true);    init();    myWebView.loadUrl("http://h5.eqxiu.com/s/F93iW6fu");  }  @Override  public boolean onCreateOptionsMenu(Menu menu) {    getMenuInflater().inflate(R.menu.my, menu);    return true;  }  @Override  public boolean onOptionsItemSelected(MenuItem item) {    int id = item.getItemId();    if (id == R.id.action_settings) {      return true;    }    return super.onOptionsItemSelected(item);  }  @Override  public boolean onKeyDown(int keyCode, KeyEvent event) {    if (keyCode == KeyEvent.KEYCODE_BACK && myWebView.canGoBack()) {      myWebView.goBack();      return true;    }    return super.onKeyDown(keyCode, event);  }  public void init(){    if(Build.VERSION.SDK_INT >= 19) {      myWebView.getSettings().setLoadsImagesAutomatically(true);    } else {      myWebView.getSettings().setLoadsImagesAutomatically(false);    }  }}

package com.bzu.gxs.webview1;import android.content.Context;import android.util.AttributeSet;import android.view.LayoutInflater;import android.webkit.WebChromeClient;import android.webkit.WebView;import android.webkit.WebViewClient;import android.widget.ProgressBar;import android.widget.Toast;/** * Created by GXS on 2016/5/12. */public class MyWebView extends WebView{  private ProgressBar progressBar;  private Context mContext;  public MyWebView(Context context, AttributeSet attributeSet) {    super(context,attributeSet);    mContext = context;    progressBar = (ProgressBar) LayoutInflater.from(context).inflate(R.layout.progressbar,null);    progressBar.setLayoutParams(new LayoutParams(LayoutParams.MATCH_PARENT,6,0,0));    addView(progressBar);    setWebChromeClient(new WebChromeClient());    setWebViewClient(new WebViewClient(){      @Override      public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) {        Toast.makeText(mContext,"Gxs"+description,Toast.LENGTH_SHORT).show();      }    });    this.getSettings().setBuiltInZoomControls(true);    this.getSettings().setUseWideViewPort(true);  }  public class WebChromeClient extends android.webkit.WebChromeClient {    @Override    public void onProgressChanged(WebView view, int newProgress) {      if (newProgress == 100) {        progressBar.setVisibility(GONE);      } else {        if (progressBar.getVisibility() == GONE)          progressBar.setVisibility(VISIBLE);          progressBar.setProgress(newProgress);      }      super.onProgressChanged(view,newProgress);    }  }  @Override  protected void onScrollChanged(int l, int t, int oldl, int oldt) {    LayoutParams layoutParams = (LayoutParams) progressBar.getLayoutParams();    layoutParams.x = l;    layoutParams.y = t;    progressBar.setLayoutParams(layoutParams);    super.onScrollChanged(l, t, oldl, oldt);  }}

<?xml version="1.0" encoding="utf-8"?><RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"  xmlns:tools="http://schemas.android.com/tools"  android:layout_width="match_parent"  android:layout_height="match_parent"  tools:context="com.bzu.gxs.webview1.MainActivity">  <com.bzu.gxs.webview1.MyWebView    android:id="@+id/webView"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:text="Hello World!" /></RelativeLayout>

<?xml version="1.0" encoding="utf-8"?><ProgressBar xmlns:android="http://schemas.android.com/apk/res/android"  android:id="@+id/ProgressBar"  style="?android:attr/progressBarStyleHorizontal"  android:layout_width="match_parent"  android:layout_height="wrap_content"  android:indeterminate="false"  android:maxHeight="10dip"  android:minHeight="10dip"  android:progress="50"  android:progressDrawable="@drawable/greenprogress" />