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在日常开发中，WebView可能需要点击上传一些图片。
那在WebView打开相册的功能是要怎样实现呢？
答案就是在webview.setWebChromeClient()中实现openFileChooser()方法，具体代码如下：
webView.setWebChromeClient(new WebChromeClient() {
@Override
public void onProgressChanged(WebView view, int newProgress) {
super.onProgressChanged(view, newProgress);
}
@Override
public boolean onJsBeforeUnload(WebView view, String url, String message, final JsResult result) {
return super.onJsBeforeUnload(view, url, message, result);
}
openFileChooser(vc, acceptType, "filesystem");
// For Android > 4.1.1
public void openFileChooser(ValueCallback<Uri> uploadMsg, String acceptType, String capture) {
final String mediaSourceValueFileSystem = "filesystem";
final String mediaSourceKey = "capture";
final String imageMimeType = "image/*";
if (_uploadMessage != null) {
return;
}
_uploadMessage = uploadMsg;
if (Environment.getExternalStorageState().equals(android.os.Environment.MEDIA_MOUNTED)
&& _activity.getExternalCacheDir() != null) {
Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
intent.addCategory(Intent.CATEGORY_OPENABLE);
intent.putExtra(DOCUMETS_UI_POLICY, DOCUMENTS_UI_POLICY_SEC);
intent.setType(imageMimeType);
startActivityForResult(intent, REQUEST_WEBVIEW_GET_PHOTO);
}
}
// Android > 5.0.1
public boolean onShowFileChooser(
WebView webView, ValueCallback<Uri[]> filePathCallback,
FileChooserParams fileChooserParams) {
String acceptTypes[] = fileChooserParams.getAcceptTypes();
String acceptType = "";
for (String acceptType1 : acceptTypes) {
if (acceptType1 != null && acceptType1.length() != 0)
acceptType += acceptType1 + ";";
}
if (acceptType.length() == 0)
acceptType = "*/*";
final ValueCallback<Uri[]> finalFilePathCallback = filePathCallback;
ValueCallback<Uri> vc = new ValueCallback<Uri>() {
@Override
public void onReceiveValue(Uri value) {
Uri[] result;
if (value != null)
result = new Uri[]{value};
else
result = null;
finalFilePathCallback.onReceiveValue(result);
}
};
return true;
}
});
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