具体效果可见“掌眼”掌拍古玩江湖：http://bbs.guwanch.com
private String imgurl = "";/***
* 功能：长按图片保存到手机
*/
@Override
public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) {
super.onCreateContextMenu(menu, v, menuInfo);
MenuItem.OnMenuItemClickListener handler = new MenuItem.OnMenuItemClickListener() {
public boolean onMenuItemClick(MenuItem item) {
if (item.getTitle() == "保存到手机") {
new SaveImage().execute(); // Android 4.0以后要使用线程来访问网络
} else {
return false;
}
return true;
}
};
if (v instanceof WebView) {
WebView.HitTestResult result = ((WebView) v).getHitTestResult();
if (result != null) {
int type = result.getType();
if (type == WebView.HitTestResult.IMAGE_TYPE || type == WebView.HitTestResult.SRC_IMAGE_ANCHOR_TYPE) {
imgurl = result.getExtra();
menu.setHeaderTitle("提示");
menu.add(0, v.getId(), 0, "保存到手机").setOnMenuItemClickListener(handler);
}
}
}
}/***
* 功能：用线程保存图片
*
* @author wangyp
*
*/
private class SaveImage extends AsyncTask<String, Void, String> {
@Override
protected String doInBackground(String... params) {
String result = "";
try {
String sdcard = Environment.getExternalStorageDirectory().toString();
File file = new File(sdcard + "/Download");
if (!file.exists()) {
file.mkdirs();
}
int idx = imgurl.lastIndexOf(".");
String ext = imgurl.substring(idx);
file = new File(sdcard + "/Download/" + new Date().getTime() + ext);
InputStream inputStream = null;
URL url = new URL(imgurl);
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.setRequestMethod("GET");
conn.setConnectTimeout(20000);
if (conn.getResponseCode() == 200) {
inputStream = conn.getInputStream();
}
byte[] buffer = new byte[4096];
int len = 0;
FileOutputStream outStream = new FileOutputStream(file);
while ((len = inputStream.read(buffer)) != -1) {
outStream.write(buffer, 0, len);
}
outStream.close();
result = "图片已保存至：" + file.getAbsolutePath();
} catch (Exception e) {
result = "保存失败！" + e.getLocalizedMessage();
}
return result;
}@Override
protected void onPostExecute(String result) {
MsgBox("提示", result);
}
}
具体效果可下载APP测试：
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