android使用WebView加载html input标签调用手机相机相册 后添加扫码功能

android webview 拍照上传 package cn.com.shengchuang.webviewphoto;import android.Manifest;import android.annotation.TargetApi;import android.app.Activity;import android.content.ClipData;import android.content.Intent;import android.content.pm.PackageManager;import android.net.Uri;import android.os.Build;import android.os.Bundle;import android.os.Environment;import android.provider.MediaStore;import android.support.v4.app.ActivityCompat;import android.support.v4.content.ContextCompat;import android.support.v7.app.AppCompatActivity;import android.webkit.JavascriptInterface;import android.webkit.ValueCallback;import android.webkit.WebChromeClient;import android.webkit.WebSettings;import android.webkit.WebView;import android.widget.Toast;import java.io.File;import cn.com.shengchuang.webviewphoto.Zxing.CaptureActivity;public class MainActivity extends AppCompatActivity {    private WebView mWebView;    private ValueCallback<Uri> mUploadMessage;// 表单的数据信息    private ValueCallback<Uri[]> mUploadCallbackAboveL;    private final static int FILECHOOSER_RESULTCODE = 1;// 表单的结果回调</span>    private static final int REQ_CAMERA = FILECHOOSER_RESULTCODE+1;//拍照    private static final int REQ_CHOOSE = REQ_CAMERA+1; //调用相册    private Uri imageUri;    private static final int CAMERA_PERMISSIONS_REQUEST_CODE = REQ_CHOOSE+1;    private static final int ABLUM_PERMISSIONS_REQUEST_CODE = CAMERA_PERMISSIONS_REQUEST_CODE+1;    private static final int SCAN_CODE = ABLUM_PERMISSIONS_REQUEST_CODE+1;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        mWebView = (WebView) findViewById(R.id.web);        WebSettings settings = mWebView.getSettings();        settings.setJavaScriptEnabled(true);        settings.setRenderPriority(WebSettings.RenderPriority.HIGH);        settings.setUseWideViewPort(true);        settings.setLoadWithOverviewMode(true);        settings.setJavaScriptEnabled(true);        settings.setSupportZoom(true);        settings.setBlockNetworkImage(false);        mWebView.addJavascriptInterface(this,"scan");        mWebView.loadUrl("file:///android_asset/addfigure.html");        /**         * 不同手机相机相册兼容问题         */        mWebView.setWebChromeClient(new MyWebChromeClient());    }    @JavascriptInterface    public void openScan(){        Intent intent = new Intent(MainActivity.this, CaptureActivity.class);        startActivityForResult(intent, SCAN_CODE);    }    /**     * android webview 兼容相机相册选择     */    public class MyWebChromeClient extends WebChromeClient{        // For Android >= 5.0        @Override        public boolean onShowFileChooser(WebView webView, ValueCallback<Uri[]> filePathCallback,FileChooserParams fileChooserParams) {            mUploadCallbackAboveL = filePathCallback;            takePhoto();            return true;        }        // For Android < 3.0        public void openFileChooser(ValueCallback<Uri> uploadMsg) {            mUploadMessage = uploadMsg;            takePhoto();        }        // For Android  >= 3.0        public void openFileChooser(ValueCallback<Uri> uploadMsg, String acceptType) {            mUploadMessage = uploadMsg;            takePhoto();        }        //For Android  >= 4.1        public void openFileChooser(ValueCallback<Uri> uploadMsg, String acceptType, String capture) {            mUploadMessage = uploadMsg;            takePhoto();        }    }    public void takePhoto(){        //弹出提示框        new CommomDialog(this,new CommomDialog.CameraOpenListener(){            @Override            public void onClick(CommomDialog c) {                checkCameraPermission();                c.dismiss();            }        },new CommomDialog.AblumOpenListener(){            @Override            public void onClick(CommomDialog c) {                showAblum();                c.dismiss();            }        })         .show();    }    /**     * 调用相机权限控制     */    public void checkCameraPermission(){        if (ContextCompat.checkSelfPermission(MainActivity.this, Manifest.permission.CAMERA)                != PackageManager.PERMISSION_GRANTED||ContextCompat.checkSelfPermission(MainActivity.this, Manifest.permission.WRITE_EXTERNAL_STORAGE)                != PackageManager.PERMISSION_GRANTED) {            //申请WRITE_EXTERNAL_STORAGE权限            ActivityCompat.requestPermissions(MainActivity.this, new String[]{Manifest.permission.CAMERA,Manifest.permission.WRITE_EXTERNAL_STORAGE}, CAMERA_PERMISSIONS_REQUEST_CODE);        }else{            showCamera();        }    }    /**     * 调用相机     */    public void showCamera(){        File tempFile = new File(Environment.getExternalStorageDirectory(),"image.jpg");        imageUri = Uri.fromFile(tempFile);        Intent openCameraIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);        openCameraIntent.putExtra(MediaStore.EXTRA_OUTPUT,imageUri);        startActivityForResult(openCameraIntent,REQ_CAMERA);    }    /**     * 相册权限控制     */    public void checkAblumPermission(){        if (ContextCompat.checkSelfPermission(MainActivity.this, Manifest.permission.WRITE_EXTERNAL_STORAGE)                != PackageManager.PERMISSION_GRANTED) {            //申请WRITE_EXTERNAL_STORAGE权限            ActivityCompat.requestPermissions(MainActivity.this, new String[]{Manifest.permission.CAMERA,Manifest.permission.WRITE_EXTERNAL_STORAGE}, ABLUM_PERMISSIONS_REQUEST_CODE);        }else{            showAblum();        }    }    /**     * 调用相册     */    public void showAblum(){        Intent openAlbumIntent = new Intent(Intent.ACTION_GET_CONTENT);        openAlbumIntent.addCategory(Intent.CATEGORY_OPENABLE);        openAlbumIntent.setType("image/*");        startActivityForResult(openAlbumIntent,REQ_CHOOSE);    }    /**     * 权限处理回掉     * @param requestCode     * @param permissions     * @param grantResults     */    @Override    public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {        super.onRequestPermissionsResult(requestCode, permissions, grantResults);        if (requestCode == CAMERA_PERMISSIONS_REQUEST_CODE) {            if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {                //申请成功，可以拍照                showCamera();            } else {                Toast.makeText(MainActivity.this,"你拒绝了权限，该功能不可用\n可在应用设置里授权拍照哦",Toast.LENGTH_SHORT).show();            }            return;        }        if(requestCode == ABLUM_PERMISSIONS_REQUEST_CODE){            if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {                //申请成功                showAblum();            } else {                Toast.makeText(MainActivity.this,"你拒绝了权限，该功能不可用\n可在应用设置里授权查看相册哦",Toast.LENGTH_SHORT).show();            }            return;        }    }    @Override    protected void onActivityResult(int requestCode, int resultCode, Intent data) {        super.onActivityResult(requestCode, resultCode, data);        if (requestCode == REQ_CAMERA||requestCode == REQ_CHOOSE) {            if (null == mUploadMessage && null == mUploadCallbackAboveL) return;            Uri result = data == null || resultCode != RESULT_OK ? null : data.getData();            if (mUploadCallbackAboveL != null) {                onActivityResultAboveL(requestCode, resultCode, data);            } else if (mUploadMessage != null) {                mUploadMessage.onReceiveValue(result);                mUploadMessage = null;            }        }else if(requestCode == SCAN_CODE){           String arg = data.getStringExtra("result");            mWebView.loadUrl("javascript:receptionResult('" +arg + "')");        }    }    @TargetApi(Build.VERSION_CODES.LOLLIPOP)    private void onActivityResultAboveL(int requestCode, int resultCode, Intent data) {        Uri[] results = null;        if (resultCode == Activity.RESULT_OK) {            if (data == null) {                results = new Uri[]{imageUri};            } else {                String dataString = data.getDataString();                ClipData clipData = data.getClipData();                if (clipData != null) {                    results = new Uri[clipData.getItemCount()];                    for (int i = 0; i < clipData.getItemCount(); i++) {                        ClipData.Item item = clipData.getItemAt(i);                        results[i] = item.getUri();                    }                }                if (dataString != null)                    results = new Uri[]{Uri.parse(dataString)};            }        }        if (results != null) {            mUploadCallbackAboveL.onReceiveValue(results);            mUploadCallbackAboveL = null;        } else {            results = new Uri[]{};            mUploadCallbackAboveL.onReceiveValue(results);            mUploadCallbackAboveL = null;        }        return;    }}源码地址：https://github.com/binbinwei/android-webview-camera-ablum.git