我有一个类，它扩展了“View”并实现了“OnTouchListener”，所以它会自动覆盖 ontouch 方法，但这个方法不起作用。我尝试通过在此方法中放置断点进行调试，但未调用它。
我尝试从另一个论坛解决这个问题。他们告诉 onTouch() 必须返回 true；但也不是更好。
我的课堂问题：
public class Viewer extends View implements OnTouchListener{
/** Constant tile width. */
public static final int TILEW = 32;
/** Constant tile height. */
public static final int TILEH = 70;
/** Constant tile shift due to increased level. */
public static final int TILESKEW = 7;
/** Tile images. */
private Bitmap[][] tileImages;
/** Highlighted tile images. */
private Bitmap[][] tileImagesHL;
/** Board itself. */
private Board b;
private Tile[][][] tTile;
private float screenWidth = Defines.getScreenWidth();
private float screenHeight = Defines.getScreenHeight();
private float offsetImg = Defines.getOffsetImage();
private float reScalePosX = Defines.getReScalePosX();
private float reScalePosY = Defines.getReScalePosY();
private boolean firstIter;
/** Stores selected tiles */
private ArrayList<Tile> selectedTiles;// = new ArrayList<Tile>();
/** Stores highlighted tiles by Hint */
private ArrayList<Tile> highlightedTiles;// = new ArrayList<Tile>();
//////////////////////////////////////////////////
private static RectF screen;
private Images imgObj;
public Viewer(Context context) {
super(context);
// TODO Auto-generated constructor stub
imgObj = new Images(context);
b = new MainActivity().board;
Defines.setScreenRender(1280, 800);
makeTileImages(Board.MAXGROUPS);
}
@Override
protected void onDraw(Canvas canvas){
drawBackGround(imgObj.bg01, canvas);
try{
tTile = b.getContent();
if(tTile==null || tileImages==null){
return;
}
drawTile(tTile, canvas);
}catch (Exception e) {
// TODO: handle exception
}
}
@Override
public boolean onTouch(View v, MotionEvent event) {
// TODO Auto-generated method stub
Log.d("Mydebug", "YEHHHHHH");
Tile[][][] content = b.getContent();
for (int i = 0; i < content.length; i++) {
for (int y = 0; y < content[i].length; y++) {
for (int x = 0; x < content[i][y].length; x++) {
processMouseClick(content, i, y , x, event);
}
}
}
return true;
}
public void drawBackGround(Bitmap bitmapBG,Canvas canvas){
screen = new RectF(0.0f, 0.0f, Defines.getScreenWidth(),Defines.getScreenHeight());
canvas.drawBitmap(bitmapBG, null, screen, null);
}
private void makeTileImages(int groups){
tileImages = loadTileset(groups, "unlit_");
tileImagesHL = loadTileset(groups, "lit_");
}
private Bitmap[][] loadTileset(int groups,String prefix){
Bitmap[][] tr = new Bitmap[groups][Board.GROUPSIZE];
try{
InputStream is = this.getResources().getAssets().open("Tiles/tiles.set");
BufferedReader f = new BufferedReader(new InputStreamReader(is));
String s = f.readLine();
while (s!=null) {
if (!s.startsWith("#")) {
String[] tokens = s.split(" ");
try{
int groupNum =Integer.parseInt(tokens[0]);
for(int i =1; i<=(Board.GROUPSIZE);i++){
String pathPNG = "Tiles/"+prefix+tokens[i]+".png";
Bitmap img = imgObj.loadImage(pathPNG);
img = imgObj.resizeBitmap(img,Tile.tileHeight, Tile.tileWidth);
//Bitmap img = loadImage(pathPNG);
//Log.d("Mydebug", "PATH:"+pathPNG);
tr[groupNum][i-1] = img;
}
}catch (Exception e) {
// TODO: handle exception
Log.d("Mydebug", "File error TIles/tile.set");
}
}
s = f.readLine();
}
}catch (Exception e) {
// TODO: handle exception
}
return tr;
}
public void drawTile(Tile[][][] content,Canvas canvas){
for (int i = 0; i < content.length; i++) {
for (int y = 0; y < content[i].length; y++) {
for (int x = 0; x < content[i][y].length; x++) {
final Tile t = content[i][y][x];
if (t != null) {
if (y>0 && content[i][y-1][x]!=null && t.equals(content[i][y-1][x])) {
continue;
}
if (x>0 && content[i][y][x-1]!=null && t.equals(content[i][y][x-1])) {
continue;
}
Bitmap image = tileImages[t.getValue()][t.getSubindex()];
if (b.free(t)) {
image = tileImagesHL[t.getValue()][t.getSubindex()];
}
/* Draw tile images to panel */
//canvas.drawBitmap(image, x*TILEW+TILEW/2+i*TILESKEW, (y+1)*TILEH/2-i*TILESKEW, null);
canvas.drawBitmap(image, (x*TILEW+TILEW/2+i*TILESKEW)+200, ((y+1)*TILEH/2-i*TILESKEW)+100, null);
}
}
}
}
}
/** A helper function for the Viewer constructor which accompanies the mouseListener object on each tiles
* @param content The current board's 3D array of positions
* @param i The current tile's x position
* @param y The current tile's y position
* @param x The current tile's z position
* @param me The mouseEvent for each tile
*/
private void processMouseClick(Tile[][][] content, int i, int y, int x, MotionEvent touchPos){
final Tile t = content[i][y][x];
if (t != null) {
if (y>0 && content[i][y-1][x]!=null && t.equals(content[i][y-1][x])) {
return;
}
if (x>0 && content[i][y][x-1]!=null && t.equals(content[i][y][x-1])) {
return;
}
Bitmap image = tileImages[t.getValue()][t.getSubindex()];
if (b.free(t)) {
image = tileImagesHL[t.getValue()][t.getSubindex()];
}
// Rectangle representing space of tile
final Rect rect = new Rect(x*TILEW+TILEW/2+i*TILESKEW, (y+1)*TILEH/2-i*TILESKEW, image.getWidth(), image.getHeight());
//if ((rect.contains(me.getPoint())) && b.free(t) && t.isVisible()) {
if ((rect.contains((int)touchPos.getX(), (int)touchPos.getY()) && b.free(t))){
t.wasClicked = true;
firstIter = false;
Log.d("MyDebug", "Clicked ME");
//if (content[i][y][x].isVisible()){
//Add corresponding JLabel to panel
// t.tLabel.setBounds(x*TILEW+TILEW/2+i*TILESKEW, (y+1)*TILEH/2-i*TILESKEW, image.getWidth(null), image.getHeight(null));
// t.tLabel.setVisible(false);
// t.tLabel.setBorder(BorderFactory.createLineBorder(Color.blue, 2));
//}
//validClick(t);
}
}
}
}