WebView调起系统相册和拍照功能

2018-02-27 11:30:34来源:https://www.jianshu.com/p/0c6607777d02作者:xbase人点击

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公司项目,需要在webview中调起相册和拍照,网上文章照搬照抄一大堆,一个都不好使,系统兼容性,品牌兼容性,问题多多,我直接上代码:
重写WebViewChromeClient中的方法:


public void openFileChooser(ValueCallback<Uri> uploadMsg, String acceptType) {
openFileChooserImpl(uploadMsg);
}
//3.0--版本
public void openFileChooser(ValueCallback<Uri> uploadMsg) {
openFileChooserImpl(uploadMsg);
}
public void openFileChooser(ValueCallback<Uri> uploadMsg, String acceptType, String capture) {
openFileChooserImpl(uploadMsg);
}
// For Android > 5.0
public boolean onShowFileChooser(WebView webView, ValueCallback<Uri[]> uploadMsg, WebChromeClient.FileChooserParams fileChooserParams) {
openFileChooserImplForAndroid5(uploadMsg);
return true;
}

根据系统不同调用不同方法,如下:


private void openFileChooserImpl(ValueCallback<Uri> uploadMsg) {
mUploadMessage = uploadMsg;
Intent chooserIntent = IntentUtil.createImageChooserIntent(getString(R.string.carowner_register_select_image_source));
startActivityForResult(chooserIntent, FILECHOOSER_RESULTCODE);
}
private void openFileChooserImplForAndroid5(ValueCallback<Uri[]> uploadMsg) {
mUploadCallbackAboveL = uploadMsg;
Intent chooserIntent = IntentUtil.createImageChooserIntent(getString(R.string.carowner_register_select_image_source));
startActivityForResult(chooserIntent, FILECHOOSER_RESULTCODE_FOR_ANDROID_5);
}

接下来是IntentUtil中的方法:


/**
* 返回获取图片Intent,包含相册选择和拍照二项
* @param title picker标题
* @return intent
*/
public static Intent createImageChooserIntent(final String title) {
Intent contentSelectionIntent = new Intent(Intent.ACTION_GET_CONTENT);
contentSelectionIntent.addCategory(Intent.CATEGORY_OPENABLE);
contentSelectionIntent.setType("image/*");
Intent galleryIntent = new Intent(
Intent.ACTION_GET_CONTENT,
android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
Intent takePhotoIntent = takePhoto();
Intent chooserIntent = Intent.createChooser(galleryIntent, title);
chooserIntent.putExtra
(
Intent.EXTRA_INITIAL_INTENTS,
new Intent[]{takePhotoIntent}
);
return chooserIntent;
}
static Uri imageUri;
private static Intent takePhoto() {
Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
try {
if (Build.VERSION.SDK_INT >= 24) {
imageUri = FileProvider.getUriForFile(BaseApplication.getApplication(),
"com.yongche.provider",
createImageFile());
} else {
imageUri = Uri.fromFile(createImageFile());
}
} catch (IOException e) {
e.printStackTrace();
}
if (imageUri != null) {
takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT, imageUri);
}
return takePictureIntent;
}
/**
* 拍照后创建临时文件,供上传使用
* @return
* @throws IOException
*/
private static File createImageFile() throws IOException {
String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date());
String imageFileName = "JPEG_" + timeStamp + "_";
File storageDir = BaseApplication.getApplication().getExternalFilesDir(Environment.DIRECTORY_PICTURES);
File image = File.createTempFile(
imageFileName, /* prefix */
".jpg", /* suffix */
storageDir /* directory */
);
return image;
}
public static Uri getImageUri() {
return imageUri;
}

最后在调用的Activity中重写OnActivityResult方法:


@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == FILECHOOSER_RESULTCODE) {
if (null == mUploadMessage)
return;
if (resultCode == RESULT_OK) {
Uri result = (data == null) ? null : data.getData();
if (result != null) {
mUploadMessage.onReceiveValue(result);
} else {
Uri imageUri = IntentUtil.getImageUri();
if (imageUri != null) {
mUploadMessage.onReceiveValue(imageUri);
}
}
}else if (resultCode == RESULT_CANCELED) {
mUploadMessage.onReceiveValue(null);
}
mUploadMessage = null;
} else if (requestCode == FILECHOOSER_RESULTCODE_FOR_ANDROID_5) {
if (null == mUploadCallbackAboveL)
return;
if (resultCode == RESULT_OK) {
Uri result = (data == null) ? null : data.getData();
if (result != null) {
mUploadCallbackAboveL.onReceiveValue(new Uri[]{result});
} else {
Uri imageUri = IntentUtil.getImageUri();
if (imageUri != null) {
mUploadCallbackAboveL.onReceiveValue(new Uri[]{imageUri});
}
}
} else if (resultCode == RESULT_CANCELED) {
mUploadCallbackAboveL.onReceiveValue(new Uri[]{});
}
mUploadCallbackAboveL = null;
}
super.onActivityResult(requestCode, resultCode, data);
}







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