android的进度条使用
16lz
2021-12-04
android的进度条
1、实现的效果
2、布局代码
先写一个my_browser.xml文件 存放WebView
<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" android:orientation="vertical" > <WebView android:id="@+id/webView" android:layout_width="fill_parent" android:layout_height="fill_parent" /></LinearLayout>
进度条布局
然后写一个broser.xml存放进度条的
<?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent"> <TextView android:id="@+id/tvtitle" android:layout_width="fill_parent" android:layout_height="wrap_content" android:focusableInTouchMode="true" android:singleLine="true" android:ellipsize="marquee" android:focusable="false" android:marqueeRepeatLimit="marquee_forever" android:textSize="20sp" android:layout_centerVertical="true"/> <ProgressBar android:id="@+id/pb" android:layout_width="fill_parent" android:layout_height="wrap_content" style="?android:attr/progressBarStyleHorizontal" android:visibility="gone" android:layout_alignParentBottom="true" ></ProgressBar> </RelativeLayout>
WebChromeClient
重写onProgressChanged和onReceivedTitle事件(进度条载入完毕后使用动画渐退)
/** * MyWebChromeClient.java * 版权全部(C) 2012
* 创建:cuiran 2012-10-16 下午3:05:34 */package com.cayden.citygirl.activity;import android.app.Activity;import android.view.View;import android.view.animation.Animation;import android.view.animation.AnimationUtils;import android.webkit.WebChromeClient;import android.webkit.WebView;import android.widget.ProgressBar;import android.widget.TextView;/** * TODO * @author cuiran * @version TODO */public class MyWebChromeClient extends WebChromeClient {private Activity activity; private ProgressBar pb; private Animation animation; private TextView tvtitle; public MyWebChromeClient(Activity activity) { this.activity = activity; } @Override public void onProgressChanged(WebView view, int newProgress) { pb=(ProgressBar)activity.findViewById(R.id.pb); pb.setMax(100); if(newProgress<100){ if(pb.getVisibility()==View.GONE) pb.setVisibility(View.VISIBLE); pb.setProgress(newProgress); }else{ pb.setProgress(100); animation=AnimationUtils.loadAnimation(activity, R.anim.animation); // 执行动画 pb.startAnimation(animation); // 将 spinner 的可见性设置为不可见状态 pb.setVisibility(View.INVISIBLE); } super.onProgressChanged(view, newProgress); } @Override public void onReceivedTitle(WebView view, String title) { tvtitle=(TextView)activity.findViewById(R.id.tvtitle); tvtitle.setText(title);super.onReceivedTitle(view, title);} }
进度条的动画样式 res/anim/animation.xml
<?xml version="1.0" encoding="utf-8"?> <set xmlns:android="http://schemas.android.com/apk/res/android"> <alpha android:fromAlpha="1.0" android:toAlpha="0.0" android:duration="700"/> </set>
5、程序启动类
/** * ProgressActivity.java * 版权全部(C) 2012 * 创建:cuiran 2012-10-16 下午3:13:49 */package com.cayden.citygirl.activity;import android.app.Activity;import android.os.Bundle;import android.view.Window;import android.webkit.WebView;/** * TODO * @author cuiran * @version TODO */public class ProgressActivity extends Activity {private WebView browser; @Override public void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState); getWindow().requestFeature(Window.FEATURE_CUSTOM_TITLE); setContentView(R.layout.my_browser); getWindow().setFeatureInt(Window.FEATURE_CUSTOM_TITLE, R.layout.broser);browser = (WebView) findViewById(R.id.webView); // currentWebView=browser; browser.setWebChromeClient(new MyWebChromeClient(ProgressActivity.this)); browser.loadUrl("http://shop.paipai.com/731681975/"); }} 更多相关文章
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