webview打开图库并获取安卓文件图片

1，实现安卓webview 打开安卓图库并拿到文件，最后调用js实现文件上传（未实现）。

2，

demo81.htm

网页代码如下：一个简单的文件选择按钮。

HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
        "http://www.w3.org/TR/html4/loose.dtd">


        id="fileImage" type="file" size="300" name="fileselect" accept="image/*" />

3，安卓实现代码

package cai.com.myapplication;

import android.annotation.SuppressLint;
import android.app.Activity;
import android.content.Intent;
import android.net.Uri;
import android.os.Build;
import android.os.Bundle;
import android.support.v4.app.FragmentActivity;
import android.webkit.ValueCallback;
import android.webkit.WebChromeClient;
import android.webkit.WebView;


public class WebViewDemo extends FragmentActivity {

    private static final int FILE_SELECT_CODE = 0;

    private WebView webView;
    private ValueCallback mUploadMessage;//回调图片选择，4.4以下
    private ValueCallback mUploadCallbackAboveL;//回调图片选择，5.0以上

    @Override
    protected void onCreate(Bundle arg0) {
        super.onCreate(arg0);
        setContentView(R.layout.content_main);
        initWebView();

    }

    @SuppressLint("SetJavaScriptEnabled")
    private void initWebView() {
        webView = (WebView) findViewById(R.id.webview);

        WebView webView = (WebView) findViewById(R.id.webview);
        //允许JavaScript执行
        webView.getSettings().setJavaScriptEnabled(true);
        webView.getSettings().setLoadsImagesAutomatically(true);
        webView.setVerticalScrollBarEnabled(false);
        //运行webview通过URI获取安卓文件
        webView.getSettings().setAllowFileAccess(true);
        webView.getSettings().setAllowFileAccessFromFileURLs(true);
        webView.getSettings().setAllowUniversalAccessFromFileURLs(true);

        webView.setWebChromeClient(new MyWebChromeClient());//设置可以打开图片管理器
        webView.loadUrl("file:///android_asset/demo81.htm");

    }


    private class MyWebChromeClient extends WebChromeClient {

        // For Android 3.0+
        public void openFileChooser(ValueCallback uploadMsg) {

            mUploadMessage = uploadMsg;
            Intent i = new Intent(Intent.ACTION_GET_CONTENT);
            i.addCategory(Intent.CATEGORY_OPENABLE);
            i.setType("image/*");
            startActivityForResult(Intent.createChooser(i, "File Chooser"), FILE_SELECT_CODE);

        }

        // For Android 3.0+
        public void openFileChooser(ValueCallback uploadMsg, String acceptType) {
            mUploadMessage = uploadMsg;
            Intent i = new Intent(Intent.ACTION_GET_CONTENT);
            i.addCategory(Intent.CATEGORY_OPENABLE);
            i.setType("*/*");
            startActivityForResult(Intent.createChooser(i, "File Browser"), FILE_SELECT_CODE);
        }

        // For Android 4.1
        public void openFileChooser(ValueCallback uploadMsg, String acceptType, String capture) {
            mUploadMessage = uploadMsg;
            Intent i = new Intent(Intent.ACTION_GET_CONTENT);
            i.addCategory(Intent.CATEGORY_OPENABLE);
            i.setType("image/*");
            startActivityForResult(Intent.createChooser(i, "File Chooser"), FILE_SELECT_CODE);

        }

        // For Android 5.0+
        public boolean onShowFileChooser(WebView webView, ValueCallback filePathCallback, WebChromeClient.FileChooserParams fileChooserParams) {
            mUploadCallbackAboveL = filePathCallback;
            Intent i = new Intent(Intent.ACTION_GET_CONTENT);
            i.addCategory(Intent.CATEGORY_OPENABLE);
            i.setType("*/*");
            startActivityForResult(
                    Intent.createChooser(i, "File Browser"),
                    FILE_SELECT_CODE);
            return true;
        }


    }


    @Override
    public void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        if (resultCode != Activity.RESULT_OK) {
            return;
        }

        switch (requestCode) {
            case FILE_SELECT_CODE: {
                if (Build.VERSION.SDK_INT >= 21) {//5.0以上版本处理
                    Uri uri = data.getData();
                    Uri[] uris = new Uri[]{uri};
                   /* ClipData clipData = data.getClipData();  //选择多张
                    if (clipData != null) {
                        for (int i = 0; i < clipData.getItemCount(); i++) {
                            ClipData.Item item = clipData.getItemAt(i);
                            Uri uri = item.getUri();
                            uris[i]=uri;
                        }
                    }*/
                    mUploadCallbackAboveL.onReceiveValue(uris);//回调给js
                } else {//4.4以下处理
                    Uri uri = data.getData();
                    mUploadMessage.onReceiveValue(uri);
                }


            }
            break;
        }
    }

}

运行后

选择图片后。

最后就是使用Js实现文件上传到服务器。