我已经使用此方法,android.text.Selection.setSelection(Spannable text,int index),在MyEditText中选择一些文本,自定义类继承EditText,while移动我的手指。它在单个视图中完美运行,但是当我将它应用于ListView中的多个MyEditText项时,它无法正常工作。无法在列表视图项中正确选择文本
以下是我的代码,你也可以下载它形成的github(https://github.com/ruobin/unconstrained-selecting-texts):
MyEditText.java
public class MyEditText extends EditText {
public MyEditText(Context context) {
super(context);
initialize();
}
public MyEditText(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
initialize();
}
public MyEditText(Context context, AttributeSet attrs) {
super(context, attrs);
initialize();
}
private void initialize() {
setBackgroundColor(Color.WHITE);
}
@Override
protected void onCreateContextMenu(ContextMenu menu) {
// avoid to pop out the context menu
}
@Override
public boolean getDefaultEditable() {
return false;
}
private int offset;
@Override
public boolean onTouchEvent(MotionEvent event) {
int action = event.getAction();
Layout layout = getLayout();
int line = 0;
switch (action) {
case MotionEvent.ACTION_DOWN:
line = layout.getLineForVertical(getScrollY() + (int) event.getY());
offset = layout.getOffsetForHorizontal(line, (int) event.getX());
Selection.setSelection(getEditableText(), offset);
break;
case MotionEvent.ACTION_MOVE:
case MotionEvent.ACTION_UP:
line = layout.getLineForVertical(getScrollY() + (int) event.getY());
int curOff = layout
.getOffsetForHorizontal(line, (int) event.getX());
Selection.setSelection(getEditableText(), offset, curOff);
break;
}
return true;
}
}
MyListAdapter.java
public class MyListAdapter extends BaseAdapter {
private ArrayList<String> entitys;
private Context context;
public MyListAdapter(Context context, ArrayList<String> entitys) {
this.context = context;
this.entitys = entitys;
}
@Override
public int getCount() {
if (entitys == null)
return 0;
return entitys.size();
}
@Override
public Object getItem(int position) {
if (entitys == null)
return null;
return entitys.get(position);
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
String entity = entitys.get(position);
MyEditText myTextView = (MyEditText) View.inflate(context,
R.layout.list_item, null);
myTextView.setText(entity);
return myTextView;
}
}
CopyTextTest2Activity.java
public class CopyTextTest2Activity extends Activity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
LinearLayout ll = new LinearLayout(this);
ListView lv = new ListView(this);
String values;
ArrayList<String> stringList = new ArrayList();
for (int i = 0; i < 10; i++) {
values = "" + i + " sdfsfjskldfhsklhskdfsdhf"
+ "fsdfaskhfkshdfkskdfskldf"
+ "dfskdfhkshdfkshdkiuiouweoruweoruwoeruwoer"
+ "opkspdfmmbb" + "" + "dsfasdfsdfsdfsdferwre";
stringList.add(values);
}
MyListAdapter myAdapter = new MyListAdapter(this, stringList);
lv.setAdapter(myAdapter);
lv.setDescendantFocusability(ViewGroup.FOCUS_AFTER_DESCENDANTS);
ll.addView(lv, LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT);
// lv.setEnabled(false);
setContentView(ll);
}
}
list_item.xml
3210当你运行这个项目,你会在ListView只找到的第一个项目是可选择的,另一个奇怪的是,你不能选择全部你包围的文字。
我认为onTouchEvent与listview的滚动移动不兼容,但我无能为力。
真的希望有人能帮助我!
我不完全理解你的意图,你会给我一些细节或伪代码吗? – 2012-07-20 07:49:29