Android 解決WebView無(wú)法上傳文件的問(wèn)題
Android原生的WebView并不支持上傳文件，需要我們自己實(shí)現(xiàn)相應(yīng)的方法。于是我把工作中的相關(guān)代碼記錄下來(lái)。下次直接拿來(lái)用就行了。一點(diǎn)一滴都是經(jīng)驗(yàn)。
1。需要定義三個(gè)變量
private ValueCallback<Uri[]> uploadMessageAboveL; private final static int FILE_CHOOSER_RESULT_CODE = 10000; private ValueCallback<Uri> uploadMessage;
2.重寫Activity相關(guān)方法
private void openImageChooserActivity() { Intent i = new Intent(Intent.ACTION_GET_CONTENT); i.addCategory(Intent.CATEGORY_OPENABLE); i.setType("image/*"); startActivityForResult(Intent.createChooser(i, "Image Chooser"), FILE_CHOOSER_RESULT_CODE); } @Override protected void onActivityResult(int requestCode, int resultCode, Intent data) { super.onActivityResult(requestCode, resultCode, data); if (requestCode == FILE_CHOOSER_RESULT_CODE) { if (null == uploadMessage && null == uploadMessageAboveL) return; Uri result = data == null || resultCode != RESULT_OK ? null : data.getData(); if (uploadMessageAboveL != null) { onActivityResultAboveL(requestCode, resultCode, data); } else if (uploadMessage != null) { uploadMessage.onReceiveValue(result); uploadMessage = null; } } } @TargetApi(Build.VERSION_CODES.LOLLIPOP) private void onActivityResultAboveL(int requestCode, int resultCode, Intent intent) { if (requestCode != FILE_CHOOSER_RESULT_CODE || uploadMessageAboveL == null) return; Uri[] results = null; if (resultCode == Activity.RESULT_OK) { if (intent != null) { String dataString = intent.getDataString(); ClipData clipData = intent.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)}; } } uploadMessageAboveL.onReceiveValue(results); uploadMessageAboveL = null; }3.重寫WebChromeClient中的相關(guān)方法
// For Android < 3.0 public void openFileChooser(ValueCallback<Uri> valueCallback) { uploadMessage = valueCallback; openImageChooserActivity(); } // For Android >= 3.0 public void openFileChooser(ValueCallback valueCallback, String acceptType) { uploadMessage = valueCallback; openImageChooserActivity(); } //For Android >= 4.1 public void openFileChooser(ValueCallback<Uri> valueCallback, String acceptType, String capture) { uploadMessage = valueCallback; openImageChooserActivity(); } // For Android >= 5.0 @Override public boolean onShowFileChooser(WebView webView, ValueCallback<Uri[]> filePathCallback, WebChromeClient.FileChooserParams fileChooserParams) { uploadMessageAboveL = filePathCallback; openImageChooserActivity(); return true; }感謝閱讀，希望能幫助到大家，謝謝大家對(duì)本站的支持！
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