WebView里调用相机/文件选取照片并上传
拦截到H5 的 input元素其他一些方法:
相关的全局变量:
最后说下,别忘了加一些相应的网络权限什么的。否则无法运行的。
- webView.setWebChromeClient(new WebChromeClient() {
- @Override
- public void onProgressChanged(WebView view, int newProgress) {
- if (newProgress == 100) {
- progressBar.setVisibility(View.GONE);//加载完网页进度条消失
- } else {
- progressBar.setProgress(newProgress);//设置进度值
- progressBar.setVisibility(View.VISIBLE);//开始加载网页时显示进度条
- }
- }
-
- /**
- * 8(Android 2.2) <= API <= 10(Android 2.3)回调此方法
- */
- private void openFileChooser(android.webkit.ValueCallback<Uri> uploadMsg) {
- Log.e("hl05", "运行方法 openFileChooser-1");
- // (2)该方法回调时说明版本API < 21,此时将结果赋值给 mUploadCallbackBelow,使之 != null
- mUploadCallbackBelow = uploadMsg;
- takePhoto();
- }
-
- /**
- * 11(Android 3.0) <= API <= 15(Android 4.0.3)回调此方法
- */
- public void openFileChooser(android.webkit.ValueCallback<Uri> uploadMsg, String acceptType) {
- Log.e("hl05", "运行方法 openFileChooser-2 (acceptType: " + acceptType + ")");
- // 这里我们就不区分input的参数了,直接用拍照
- openFileChooser(uploadMsg);
- }
-
- /**
- * 16(Android 4.1.2) <= API <= 20(Android 4.4W.2)回调此方法
- */
- public void openFileChooser(android.webkit.ValueCallback<Uri> uploadMsg, String acceptType, String capture) {
- Log.e("hl05", "运行方法 openFileChooser-3 (acceptType: " + acceptType + "; capture: " + capture + ")");
- // 这里我们就不区分input的参数了,直接用拍照
- openFileChooser(uploadMsg);
- }
-
- /**
- * API >= 21(Android 5.0.1)回调此方法
- */
- @Override
- public boolean onShowFileChooser(WebView webView, ValueCallback<Uri[]> valueCallback, FileChooserParams fileChooserParams) {
- Log.e("hl05", "运行方法 onShowFileChooser");
- // (1)该方法回调时说明版本API >= 21,此时将结果赋值给 mUploadCallbackAboveL,使之 != null
- mUploadCallbackAboveL = valueCallback;
- takePhoto();
- return true;
- }
- });
到这里的java代码就是来拦截input时间的,里面做了很多api版本的判断,不同版本的api调用不同的方法,下面再贴出来其他一些方法:
调起相机/选择文件的方法:takePhoto();
- /**
- * 调用相机
- */
- private void takePhoto() {
- // 指定拍照存储位置的方式调起相机
- String filePath = Environment.getExternalStorageDirectory() + File.separator
- + Environment.DIRECTORY_PICTURES + File.separator;
- String fileName = "IMG_" + DateFormat.format("yyyyMMdd_hhmmss", Calendar.getInstance(Locale.CHINA)) + ".jpg";
- imageUri = Uri.fromFile(new File(filePath + fileName));
-
- // Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
- // intent.putExtra(MediaStore.EXTRA_OUTPUT, imageUri);
- // startActivityForResult(intent, REQUEST_CODE);
-
-
- // 选择图片(不包括相机拍照),则不用成功后发刷新图库的广播
- // Intent i = new Intent(Intent.ACTION_GET_CONTENT);
- // i.addCategory(Intent.CATEGORY_OPENABLE);
- // i.setType("image/*");
- // startActivityForResult(Intent.createChooser(i, "Image Chooser"), REQUEST_CODE);
-
- Intent captureIntent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
- captureIntent.putExtra(MediaStore.EXTRA_OUTPUT, imageUri);
-
- Intent Photo = new Intent(Intent.ACTION_PICK,
- android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
-
- Intent chooserIntent = Intent.createChooser(Photo, "Image Chooser");
- chooserIntent.putExtra(Intent.EXTRA_INITIAL_INTENTS, new Parcelable[]{captureIntent});
-
- startActivityForResult(chooserIntent, REQUEST_CODE);
- }
onActivityResult回调:
- @Override
- protected void onActivityResult(int requestCode, int resultCode, Intent data) {
- super.onActivityResult(requestCode, resultCode, data);
- if (requestCode == REQUEST_CODE) {
- // 经过上边(1)、(2)两个赋值操作,此处即可根据其值是否为空来决定采用哪种处理方法
- if (mUploadCallbackBelow != null) {
- chooseBelow(resultCode, data);
- } else if (mUploadCallbackAboveL != null) {
- chooseAbove(resultCode, data);
- } else {
- Toast.makeText(this, "发生错误", Toast.LENGTH_SHORT).show();
- }
- }
- }
- /**
- * Android API < 21(Android 5.0)版本的回调处理
- * @param resultCode 选取文件或拍照的返回码
- * @param data 选取文件或拍照的返回结果
- */
- private void chooseBelow(int resultCode, Intent data) {
- Log.e("hl05", "返回调用方法--chooseBelow");
-
- if (RESULT_OK == resultCode) {
- updatePhotos();
-
- if (data != null) {
- // 这里是针对文件路径处理
- Uri uri = data.getData();
- if (uri != null) {
- Log.e("hl05", "系统返回URI:" + uri.toString());
- mUploadCallbackBelow.onReceiveValue(uri);
- } else {
- mUploadCallbackBelow.onReceiveValue(null);
- }
- } else {
- // 以指定图像存储路径的方式调起相机,成功后返回data为空
- Log.e("hl05", "自定义结果:" + imageUri.toString());
- mUploadCallbackBelow.onReceiveValue(imageUri);
- }
- } else {
- mUploadCallbackBelow.onReceiveValue(null);
- }
- mUploadCallbackBelow = null;
- }
-
- /**
- * Android API >= 21(Android 5.0) 版本的回调处理
- * @param resultCode 选取文件或拍照的返回码
- * @param data 选取文件或拍照的返回结果
- */
- private void chooseAbove(int resultCode, Intent data) {
- Log.e("hl05", "返回调用方法--chooseAbove");
-
- if (RESULT_OK == resultCode) {
- updatePhotos();
-
- if (data != null) {
- // 这里是针对从文件中选图片的处理
- Uri[] results;
- Uri uriData = data.getData();
- if (uriData != null) {
- results = new Uri[]{uriData};
- for (Uri uri : results) {
- Log.e("hl05", "系统返回URI:" + uri.toString());
- }
- mUploadCallbackAboveL.onReceiveValue(results);
- } else {
- mUploadCallbackAboveL.onReceiveValue(null);
- }
- } else {
- Log.e("hl05", "自定义结果:" + imageUri.toString());
- mUploadCallbackAboveL.onReceiveValue(new Uri[]{imageUri});
- }
- } else {
- mUploadCallbackAboveL.onReceiveValue(null);
- }
- mUploadCallbackAboveL = null;
- }
-
- private void updatePhotos() {
- // 该广播即使多发(即选取照片成功时也发送)也没有关系,只是唤醒系统刷新媒体文件
- Intent intent = new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE);
- intent.setData(imageUri);
- sendBroadcast(intent);
- }
- private android.webkit.ValueCallback<Uri[]> mUploadCallbackAboveL;
- private android.webkit.ValueCallback<Uri> mUploadCallbackBelow;
- private Uri imageUri;
- private int REQUEST_CODE = 1234;
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