Android webviewのinputfileが無効な問題

Android webview h 5ページのinput fileを特別に設定しないと無効ですが、具体的にはどうすればいいか説明します
WebviewのsetWebChromeClientを呼び出してinput fileインタフェースを書き換える必要があります

		webview.setWebChromeClient(new WebChromeClient() {		
			// For Android 3.0+
			public void openFileChooser(ValueCallback uploadMsg) {

				mUploadMessage = uploadMsg;
				Intent i = new Intent(Intent.ACTION_GET_CONTENT);
				i.addCategory(Intent.CATEGORY_OPENABLE);
				i.setType("image/*");
				MainActivity.this.startActivityForResult(Intent.createChooser(i, "File Chooser"), FILECHOOSER_RESULTCODE);

			}

			// For Android 3.0+
			public void openFileChooser(ValueCallback uploadMsg, String acceptType) {
				mUploadMessage = uploadMsg;
				Intent i = new Intent(Intent.ACTION_GET_CONTENT);
				i.addCategory(Intent.CATEGORY_OPENABLE);
				i.setType("*/*");
				MainActivity.this.startActivityForResult(
					Intent.createChooser(i, "File Browser"),
					FILECHOOSER_RESULTCODE);
			}

			//For Android 4.1
			public void openFileChooser(ValueCallback uploadMsg, String acceptType, String capture) {
				mUploadMessage = uploadMsg;
				Intent i = new Intent(Intent.ACTION_GET_CONTENT);
				i.addCategory(Intent.CATEGORY_OPENABLE);
				i.setType("image/*");
				MainActivity.this.startActivityForResult(Intent.createChooser(i, "File Chooser"), MainActivity.FILECHOOSER_RESULTCODE);

			}
			
		});

よし万事OK