到目前为止,我已经连续找了几个小时,没有找到任何合适的办法来解决我的问题。
我在摆弄我的android应用程序,试图做一个数独游戏。
TableLayout由9个表行组成,每个表行包含9个文本视图。
因此,9*9网格包含81个文本视图,每个视图都有一个OntouchListener:
final OnTouchListener cellTouch = new OnTouchListener() {
public boolean onTouch(View v, MotionEvent e) {
Log.d("TOUCH", "id: "+v.getId() + " "+e.toString());
final int action = e.getAction();
switch (action) {
case MotionEvent.ACTION_DOWN: {
// set background to different colour
// set background back if this is different TextView
break;
}
case MotionEvent.ACTION_MOVE: {
break;
}
}
return true;
}
};
ontouch在每个单独的textview上被触发,但是在触摸其中一个并移动trackball之后,会发生以下情况:
作用减弱
动作次数
行动行动
但是,我希望Ontouch能够触发其他文本视图并使其突出显示。
创建单元格的方式如下所示:
TextView cellLabel = (TextView) inflater.inflate(R.layout.sudoku_cell, tr, false);
cellLabel.setId(curCellId);
cellLabel.setText(""+ curCellId);
cellLabel.setOnTouchListener(cellTouch);
cellLabel.setOnFocusChangeListener(cellFocus);
cellLabel.setOnClickListener(cellClick);
cellLabel.setFocusable(true);
cellLabel.setClickable(true);
cellLabel.setFocusableInTouchMode(true);
每个单元:
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_height="35dp"
android:layout_weight="1"
android:textSize="18dp"
android:textColor="#FFFFFF"
android:gravity="center"
android:background="@layout/border"
/>
我尝试了很多不同的事情。比如确定textview指针在上面,但是运气不好。
希望你们有想法。谢谢你抽出时间。
谨致问候。
编辑
搜索函数循环遍历textview[][]并找到适当的单元格。但是,只能连续工作。如果我从一排换到另一排就不行了。
private TextView getCell (View v, MotionEvent e) {
float x = e.getX();
float y = e.getY();
for (int i = 0; i < GRID_HEIGHT; i++) {
for (int j = 0; j < GRID_WIDTH; j++) {
TextView tv = tvGrid[i][j];
Rect rectView = new Rect(tv.getLeft(), tv.getTop(), tv.getRight(), tv.getBottom());
if(rectView.contains((int)x, (int)y)) {
return tv;
}
}
}
return null;
}
最佳答案
这是我自己试过的密码:
布局只是一个包含3个表行的TableLayout,每个表行包含3个ID为T1、T2、…、T9的文本视图
以及活动:
public class ImgActivity extends Activity {
protected Map<View, Rect> cells = new HashMap<View, Rect>();
protected boolean hasCoordinatesPopulated;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
final TableLayout table = (TableLayout) findViewById(R.id.table);
table.getViewTreeObserver().addOnGlobalLayoutListener(new OnGlobalLayoutListener() {
@Override
public void onGlobalLayout() {
if (!hasCoordinatesPopulated) {
View view = table.findViewById(R.id.t1);
Rect rect = getRawCoordinatesRect(view);
cells.put(view, rect);
view = table.findViewById(R.id.t2);
rect = getRawCoordinatesRect(view);
cells.put(view, rect);
view = table.findViewById(R.id.t3);
rect = getRawCoordinatesRect(view);
cells.put(view, rect);
view = table.findViewById(R.id.t4);
rect = getRawCoordinatesRect(view);
cells.put(view, rect);
view = table.findViewById(R.id.t5);
rect = getRawCoordinatesRect(view);
cells.put(view, rect);
view = table.findViewById(R.id.t6);
rect = getRawCoordinatesRect(view);
cells.put(view, rect);
view = table.findViewById(R.id.t7);
rect = getRawCoordinatesRect(view);
cells.put(view, rect);
view = table.findViewById(R.id.t8);
rect = getRawCoordinatesRect(view);
cells.put(view, rect);
view = table.findViewById(R.id.t9);
rect = getRawCoordinatesRect(view);
cells.put(view, rect);
hasCoordinatesPopulated = true;
}
}
private Rect getRawCoordinatesRect(final View view) {
int[] coords = new int[2];
view.getLocationOnScreen(coords);
Rect rect = new Rect();
rect.left = coords[0];
rect.top = coords[1];
rect.right = rect.left + view.getWidth();
rect.bottom = rect.top + view.getHeight();
return rect;
}
});
table.setOnTouchListener(new OnTouchListener() {
@Override
public boolean onTouch(final View v, final MotionEvent event) {
if (event.getAction() == MotionEvent.ACTION_DOWN || event.getAction() == MotionEvent.ACTION_MOVE) {
final int x = (int) event.getRawX();
final int y = (int) event.getRawY();
for (final Entry<View, Rect> entry : cells.entrySet()) {
final View view = entry.getKey();
final Rect rect = entry.getValue();
if (rect.contains(x, y)) {
view.setBackgroundColor(Color.CYAN);
} else {
view.setBackgroundColor(Color.TRANSPARENT);
}
}
return true;
}
return false;
}
});
}
}
当然这是一个快速的样本变体。您可以将上次选择的视图存储在单独的字段中(在移动时取消选择),当找到指针下的元素时,只需
break
循环就可以节省一些时间。