Question

我的申请中有以下结构。

ListView＆gt; LinearLayout（ListItem）＆gt; LinearLayout的TextView和WebView子项。

现在问题是我的Webview第一次执行时无法滚动。从第二次它可以很好地滚动。在扩展LinearLayout后，我可以看到第一次事件正在进行，我的WebView在onTouch中获得了Action_Canceled。

为了摆脱它我写了下面的函数，但它似乎没有任何影响。我也试过使用onInterceptTouchEvent（），但在我看来并不帮助我。

public void goingCrazy(ViewGroup v) {
        v.requestDisallowInterceptTouchEvent(true);
        if (!(v instanceof Contacts_Custom_Layouts.Custom_ViewFlipper)) {
            goingCrazy((ViewGroup) v.getParent());
        }
    }

欢迎任何帮助或建议。这真的让我发疯，所以我给了功能名称相同。

Answer 1

已经两年了，但我刚遇到这个问题并解决了它添加requestDisallowInterceptTouchEvent;在设置// Convert an OEM string (8-bit) to a UTF-16 string (16-bit) #define OEMtoUNICODE(str) CHARtoWCHAR(str, CP_OEMCP) /* Convert a single/multi-byte string to a UTF-16 string (16-bit). We take advantage of the MultiByteToWideChar function that allows to specify the charset of the input string. */ LPWSTR CHARtoWCHAR(LPSTR str, UINT codePage) { size_t len = strlen(str) + 1; int size_needed = MultiByteToWideChar(codePage, 0, str, len, NULL, 0); LPWSTR wstr = (LPWSTR) LocalAlloc(LPTR, sizeof(WCHAR) * size_needed); MultiByteToWideChar(codePage, 0, str, len, wstr, size_needed); return wstr; } /* Execute a DOS command. If the function succeeds, the return value is a non-NULL pointer to the output of the invoked command. Command will produce a 8-bit characters stream using OEM code-page. As charset depends on OS config (ex: CP437 [OEM-US/latin-US], CP850 [OEM 850/latin-1]), before being returned, output is converted to a wide-char string with function OEMtoUNICODE. Resulting buffer is allocated with LocalAlloc. It is the caller's responsibility to free the memory used by the argument list when it is no longer needed. To free the memory, use a single call to LocalFree function. */ LPWSTR DosExec(LPWSTR command){ // Allocate 1Mo to store the output (final buffer will be sized to actual output) // If output exceeds that size, it will be truncated const SIZE_T RESULT_SIZE = sizeof(char)*1024*1024; char* output = (char*) LocalAlloc(LPTR, RESULT_SIZE); HANDLE readPipe, writePipe; SECURITY_ATTRIBUTES security; STARTUPINFOA start; PROCESS_INFORMATION processInfo; security.nLength = sizeof(SECURITY_ATTRIBUTES); security.bInheritHandle = true; security.lpSecurityDescriptor = NULL; if ( CreatePipe( &readPipe, // address of variable for read handle &writePipe, // address of variable for write handle &security, // pointer to security attributes 0 // number of bytes reserved for pipe ) ){ GetStartupInfoA(&start); start.hStdOutput = writePipe; start.hStdError = writePipe; start.hStdInput = readPipe; start.dwFlags = STARTF_USESTDHANDLES + STARTF_USESHOWWINDOW; start.wShowWindow = SW_HIDE; // We have to start the DOS app the same way cmd.exe does (using the current Win32 ANSI code-page). // So, we use the "ANSI" version of createProcess, to be able to pass a LPSTR (single/multi-byte character string) // instead of a LPWSTR (wide-character string) and we use the UNICODEtoANSI function to convert the given command if (CreateProcessA(NULL, // pointer to name of executable module UNICODEtoANSI(command), // pointer to command line string &security, // pointer to process security attributes &security, // pointer to thread security attributes TRUE, // handle inheritance flag NORMAL_PRIORITY_CLASS, // creation flags NULL, // pointer to new environment block NULL, // pointer to current directory name &start, // pointer to STARTUPINFO &processInfo // pointer to PROCESS_INFORMATION )){ // wait for the child process to start for(UINT state = WAIT_TIMEOUT; state == WAIT_TIMEOUT; state = WaitForSingleObject(processInfo.hProcess, 100) ); DWORD bytesRead = 0, count = 0; const int BUFF_SIZE = 1024; char* buffer = (char*) malloc(sizeof(char)*BUFF_SIZE+1); strcpy(output, ""); do { DWORD dwAvail = 0; if (!PeekNamedPipe(readPipe, NULL, 0, NULL, &dwAvail, NULL)) { // error, the child process might have ended break; } if (!dwAvail) { // no data available in the pipe break; } ReadFile(readPipe, buffer, BUFF_SIZE, &bytesRead, NULL); buffer[bytesRead] = '\0'; if((count+bytesRead) > RESULT_SIZE) break; strcat(output, buffer); count += bytesRead; } while (bytesRead >= BUFF_SIZE); free(buffer); } } CloseHandle(processInfo.hThread); CloseHandle(processInfo.hProcess); CloseHandle(writePipe); CloseHandle(readPipe); // convert result buffer to a wide-character string LPWSTR result = OEMtoUNICODE(output); LocalFree(output); return result; }

之前在ontouch内部

requestDisallowInterceptTouchEvent在WebView中不起作用

1 个答案: