Android绘制炫酷引导界面

一个超炫的引导界面，分享给大家

代码：
mainactivity.java

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);
    }
  }

}

mywebview.java

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);
  }
}

activity_main.xml

<?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>

progressbar.xml

<?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" />

注意: 需要在清单文件 androidmanifest.xml 中加入：
<uses-permission android:name="android.permission.internet"/>

以上就是本文的全部内容，希望能给大家一个参考，也希望大家多多支持。