参考博客地址
转载原文博客地址
public class MainActivity extends AppCompatActivity {
private ValueCallback 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
private Uri imageUri;
private WebView mWebView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main2);
mWebView= (WebView) findViewById(R.id.webview);
mWebView.loadUrl(“网页地址”);
mWebView.getSettings().setJavaScriptEnabled(true);
mWebView.setWebViewClient(new WebViewClient() {
@Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
return super.shouldOverrideUrlLoading(view, url);
}
});
mWebView.setWebChromeClient(new WebChromeClient() {
@Override
public boolean onShowFileChooser(WebView webView,
ValueCallback<Uri[]> filePathCallback,
FileChooserParams fileChooserParams) {
mUploadCallbackAboveL = filePathCallback;
take();
return true;
}
});
}
@RequiresApi(api = Build.VERSION_CODES.JELLY_BEAN)
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == FILECHOOSER_RESULTCODE) {
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) {
if (result != null) {
String path = getPath(getApplicationContext(),
result);
Uri uri = Uri.fromFile(new File(path));
mUploadMessage.onReceiveValue(uri);
} else {
mUploadMessage.onReceiveValue(imageUri);
}
mUploadMessage = null;
}
}
}
@SuppressWarnings(“null”)
@android.support.annotation.RequiresApi(api = Build.VERSION_CODES.JELLY_BEAN)
private void onActivityResultAboveL(int requestCode, int resultCode, Intent data) {
if (requestCode != FILECHOOSER_RESULTCODE
|| mUploadCallbackAboveL == null) {
return;
}
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[]{imageUri};
mUploadCallbackAboveL.onReceiveValue(results);
mUploadCallbackAboveL = null;
}
return;
}
private void take() {
File imageStorageDir = new File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES), “MyApp”);
if (!imageStorageDir.exists()) {
imageStorageDir.mkdirs();
}
File file = new File(imageStorageDir + File.separator + “IMG_” + String.valueOf(System.currentTimeMillis()) + “.jpg”);
imageUri = Uri.fromFile(file);
final List cameraIntents = new ArrayList();
final Intent captureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
final PackageManager packageManager = getPackageManager();
final List listCam = packageManager.queryIntentActivities(captureIntent, 0);
for (ResolveInfo res : listCam) {
final String packageName = res.activityInfo.packageName;
final Intent i = new Intent(captureIntent);
i.setComponent(new ComponentName(res.activityInfo.packageName, res.activityInfo.name));
i.setPackage(packageName);
i.putExtra(MediaStore.EXTRA_OUTPUT, imageUri);
cameraIntents.add(i);
}
Intent i = new Intent(Intent.ACTION_GET_CONTENT);
i.addCategory(Intent.CATEGORY_OPENABLE);
i.setType(“image/*”);
Intent chooserIntent = Intent.createChooser(i, “Image Chooser”);
MainActivity.this.startActivityForResult(chooserIntent, FILECHOOSER_RESULTCODE);
}
@SuppressLint(“NewApi”)
@TargetApi(Build.VERSION_CODES.KITKAT)
public static String getPath(final Context context, final Uri uri) {
final boolean isKitKat = Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT;
// DocumentProvider
if (isKitKat && DocumentsContract.isDocumentUri(context, uri)) {
// ExternalStorageProvider
if (isExternalStorageDocument(uri)) {
final String docId = DocumentsContract.getDocumentId(uri);
final String[] split = docId.split(“:”);
final String type = split[0];
if (“primary”.equalsIgnoreCase(type)) {
return Environment.getExternalStorageDirectory() + “/” + split[1];
}
} else if (isDownloadsDocument(uri)) {
final String id = DocumentsContract.getDocumentId(uri);
final Uri contentUri = ContentUris.withAppendedId(Uri.parse(“content://downloads/public_downloads”), Long.valueOf(id));
return getDataColumn(context, contentUri, null, null);
} else if (isMediaDocument(uri)) {
final String docId = DocumentsContract.getDocumentId(uri);
final String[] split = docId.split(“:”);
final String type = split[0];
Uri contentUri = null;
if (“image”.equals(type)) {
contentUri = MediaStore.Images.Media.EXTERNAL_CONTENT_URI;
} else if (“video”.equals(type)) {
contentUri = MediaStore.Video.Media.EXTERNAL_CONTENT_URI;
} else if (“audio”.equals(type)) {
contentUri = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;
}
final String selection = “_id=?”;
final String[] selectionArgs = new String[]{split[1]};
return getDataColumn(context, contentUri, selection, selectionArgs);
}
} else if (“content”.equalsIgnoreCase(uri.getScheme())) {
return getDataColumn(context, uri, null, null);
} else if (“file”.equalsIgnoreCase(uri.getScheme())) {
return uri.getPath();
总结
大厂面试问深度，小厂面试问广度，如果有同学想进大厂深造一定要有一个方向精通的惊艳到面试官，还要平时遇到问题后思考一下问题的本质，找方法解决是一个方面，看到问题本质是另一个方面。还有大家一定要有目标，我在很久之前就想着以后一定要去大厂，然后默默努力，每天看一些大佬们的文章，总是觉得只有再学深入一点才有机会，所以才有恒心一直学下去。
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