Activity跳转增加图片过渡

Activity跳转增加图片过渡

1、首先跳转后的activity增加组件(注意这个要加在最上面)

<ImageView

android:id="@+id/iv"

android:layout_width="match_parent"

android:layout_height="match_parent"

android:background="@mipmap/bg_index" />

2、activity增加查找对象

private ImageView iv;

iv = (ImageView) findViewById(R.id.iv);

3、重写webView的2个事件

@Override

public void onPageStarted(WebView view, String url, Bitmap favicon) {

super.onPageStarted(view, url, favicon);

iv.setVisibility(View.VISIBLE);

}

@Override

public void onPageFinished(WebView view, String url) {

super.onPageFinished(view, url);

iv.setVisibility(View.GONE);

}

上面2个方法可以写成一个

webView.setWebChromeClient(new WebChromeClient(){

@Override

public void onProgressChanged(WebView view, int newProgress) {

super.onProgressChanged(view, newProgress);

if (newProgress == 100) {

iv.setVisibility(View.GONE);

}else{

iv.setVisibility(View.GONE);

}

});