webview上传图片

import java.io.File;

import android.annotation.SuppressLint;
import android.app.Activity;
import android.app.AlertDialog;
import android.app.AlertDialog.Builder;
import android.app.ProgressDialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.graphics.Bitmap;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.provider.MediaStore;
import android.view.KeyEvent;
import android.webkit.ValueCallback;
import android.webkit.WebChromeClient;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.widget.Toast;

@SuppressLint("SetJavaScriptEnabled")
public class MainActivity extends Activity {
   private String url = "http://101.200.142.201";
   private WebView my_web;
   private ProgressDialog proDlg;
   private Uri imageUri;
   public ValueCallback<Uri> mUploadMessage;
   public final static int REQ_CHOOSER = 1;
   private final static int REQ_CAMERA = 2;

@SuppressLint("JavascriptInterface")
   @Override
   protected void onCreate(Bundle savedInstanceState) {
       super.onCreate(savedInstanceState);
       setContentView(R.layout.activity_main);
       my_web = (WebView) findViewById(R.id.wv);

// 支持脚本
       my_web.getSettings().setJavaScriptEnabled(true);
       //加载服务器的路径
       my_web.loadUrl(url);
       //创建对话框
       proDlg = new ProgressDialog(MainActivity.this);
       my_web.setWebViewClient(new WebViewClient() {
           @Override
           public boolean shouldOverrideUrlLoading(WebView view, String url) {
               // my_web.loadUrl(url);
               return super.shouldOverrideUrlLoading(view, url);
           }

@Override
           public void onPageStarted(WebView view, String url, Bitmap favicon) {
               proDlg.setMessage("正在加载，请稍候...");
               // 显示加载进度对话框
               proDlg.show();
           }

/**
           * 页面加载完成时，回调此方法
           */
           @Override
           public void onPageFinished(WebView view, String url) {
               // 隐藏加载进度对话框
               proDlg.dismiss();
           }
       });

my_web.setWebChromeClient(new WebChromeClient() {
           @Override
           public void onProgressChanged(WebView view, int newProgress) {
               proDlg.setMessage("loading" + newProgress + "%......");
           }

// For Android 3.0+
           public void openFileChooser(ValueCallback<Uri> uploadMsg) {
               openFileChooser(uploadMsg, "");
           }

// For Android 3.0+
           public void openFileChooser(ValueCallback uploadMsg,
                   String acceptType) {
               openFileChooser(uploadMsg, acceptType);
           }

// For Android 4.1
           public void openFileChooser(ValueCallback<Uri> uploadMsg,
                   String acceptType, String capture) {
               mUploadMessage = uploadMsg;
               selectImage();
           }

});
}

protected final void selectImage() {
       AlertDialog.Builder builder = new Builder(MainActivity.this);
       // builder.setTitle("插入照片");
       final String[] items = { "照相机", "相册" };
       builder.setItems(items, new DialogInterface.OnClickListener() {
           @SuppressLint("SdCardPath")
           public void onClick(DialogInterface dialog, int which) {
               Toast.makeText(getApplicationContext(), items[which],
                       Toast.LENGTH_SHORT).show();
               Intent intent = null;
               switch (which) {
               // 调用照相机
               case 0:
                   intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
                   // 必须确保文件夹路径存在，否则拍照后无法完成回调
                   File vFile = new File(Environment
                           .getExternalStorageDirectory().getPath()
                           + "/DCIM/Camera/"
                           + (System.currentTimeMillis() + ".jpg"));
                   if (!vFile.exists()) {
                       File vDirPath = vFile.getParentFile();
                       vDirPath.mkdirs();
                   } else {
                       if (vFile.exists()) {
                           vFile.delete();
                       }
                   }
                   imageUri = Uri.fromFile(vFile);
                   intent.putExtra(MediaStore.EXTRA_OUTPUT, imageUri);
                   MainActivity.this
                           .startActivityForResult(intent, REQ_CAMERA);
                   break;
               case 1:
                   intent = new Intent(Intent.ACTION_PICK, null);
                   intent.setDataAndType(
                           MediaStore.Images.Media.EXTERNAL_CONTENT_URI,
                           "image/*");
                   MainActivity.this.startActivityForResult(
                           Intent.createChooser(intent, "选择图片"), REQ_CHOOSER);
                   break;
               }
           }
       });
       builder.setNegativeButton("取消", new DialogInterface.OnClickListener() {
           public void onClick(DialogInterface dialog, int which) {

               dialog.cancel();

               if(mUploadMessage!=null){
                   mUploadMessage.onReceiveValue(null);
                   selectImage();
               }


           }
       });
       builder.create().show();
   }

@Override
   public void onActivityResult(int requestCode, int resultCode, Intent data) {
       // TODO Auto-generated method stub
       super.onActivityResult(requestCode, resultCode, data);
       switch (requestCode) {
       case REQ_CHOOSER:
           if (null == mUploadMessage)
               return;
           Uri result = data == null || resultCode != RESULT_OK ? null : data
                   .getData();
           mUploadMessage.onReceiveValue(result);
           mUploadMessage = null;
           break;
       case REQ_CAMERA:
           if (resultCode == Activity.RESULT_OK) {
               mUploadMessage.onReceiveValue(imageUri);
               mUploadMessage = null;
           }
           break;
       }
   }

// 此按键监听的是返回键，能够返回到上一个网页（通过网页的hostlistery）
   public boolean onKeyDown(int keyCode, KeyEvent event) {
       if ((keyCode == KeyEvent.KEYCODE_BACK) && my_web.canGoBack()) {
           my_web.goBack();
           return true;
       }
       return super.onKeyDown(keyCode, event);
   }
}

巴特西

webview上传图片

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