Android(Java):滑动删除实现——重写onTouch

public class RecordFragment extends Fragment{

private int userId;
private List datas;

private View mVNorecord;
private View mVRecord;
private Button mBtnClear;
private ListView mLvRecord;
private RecordAdapter mRecordAdapter;
private StudyLogDao studyLogDao;

@Override
public void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
}

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// TODO Auto-generated method stub
return inflater.inflate(R.layout.record_learning_layout, container, false);
}

@Override
public void onViewCreated(View view, Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onViewCreated(view, savedInstanceState);
initView(view);
initData();
}

private void initData() {
// TODO Auto-generated method stub
if(loadData()){
return;
}
userId = GlobalModel.getInstance().getUser().getUid();
StudyLog data;
int i;
for(i=0;i<20;i++){
data = new StudyLog();
data.setUserId(userId);
data.setSectionName("会计课堂"+i);
data.setSectionId(i+1);
data.setCoursewareId(i+1);
data.setCurPostion((95+i)>100?0:(95+i));
data.setStatus((short) View.GONE);
studyLogDao.insert(data);
}
loadData();
}

private boolean loadData(){

datas = studyLogDao.queryByUserId(userId);
mRecordAdapter.setRecords(datas);
if(datas.size()>0){
mVRecord.setVisibility(View.VISIBLE);
mVNorecord.setVisibility(View.GONE);
return true;
}
mVNorecord.setVisibility(View.VISIBLE);
mVRecord.setVisibility(View.GONE);
return false;
}

private void initView(View view) {
// TODO Auto-generated method stub
mVNorecord = view.findViewById(R.id.norecord);
mVRecord = view.findViewById(R.id.recordlist);
mBtnClear = (Button) view.findViewById(R.id.clear);
mLvRecord = (ListView) view.findViewById(R.id.record_learning_lv);

mRecordAdapter = new RecordAdapter(this.getActivity(), null);
mLvRecord.setAdapter(mRecordAdapter);
/*mLvRecord.setOnTouchListener(new OnTouchListener() {
View v = null;
StudyLog studyLog = null;
float x, y, ux, uy;
public boolean onTouch(View view, MotionEvent event) {
if (event.getAction() == MotionEvent.ACTION_DOWN) {
x = event.getX();
y = event.getY();
}else if (event.getAction() == MotionEvent.ACTION_UP) {
ux = event.getX();
uy = event.getY();
int position1 = ((ListView) view).pointToPosition((int) x, (int) y);
int position2 = ((ListView) view).pointToPosition((int) ux,(int) uy);
if(position1!=position2){
return false;
}
v = ((ListView) view).getChildAt(position1);
if(null == v){
return false;
}
if (ux - x > 10) {
mRecordAdapter.removeListItem(v,position1,false);
}else{
studyLog = mRecordAdapter.getRecords().get(position1);
if(studyLog.getStatus() == View.VISIBLE){
studyLog.setStatus((short) View.GONE);
}
mRecordAdapter.notifyDataSetChanged();

Course course = studyLogDao.getCourse(studyLog.getExamId(), studyLog.getSubjectId(), studyLog.getCourseId());
if (course.getProgress().contains("关闭")) {
new AlertDialog.Builder(getActivity())
.setTitle("提示")
.setMessage("很抱歉，本课程已关闭")
.setPositiveButton("确定",null).show();
return false;
}
Intent intent = new Intent(getActivity(), PlayVideoActivity.class);
intent.putExtras(studyLog.getParams());
getActivity().startActivity(intent);
}
}
return false;
}
});
mLvRecord.setOnItemClickListener(new OnItemClickListener(){
StudyLog studyLog = null;
@Override
public void onItemClick(AdapterView<?> paramAdapterView,
View paramView, int paramInt, long paramLong) {
// TODO Auto-generated method stub
studyLog = mRecordAdapter.getRecords().get(paramInt);
Course course = studyLogDao.getCourse(studyLog.getExamId(), studyLog.getSubjectId(), studyLog.getCourseId());
if (course.getProgress().contains("关闭")) {
new AlertDialog.Builder(getActivity())
.setTitle("提示")
.setMessage("很抱歉，本课程已关闭")
.setPositiveButton("确定",null).show();
}
Intent intent = new Intent(getActivity(), PlayVideoActivity.class);
intent.putExtras(studyLog.getParams());
getActivity().startActivity(intent);
}

});*/

mBtnClear.setOnClickListener(btnClickListener);
studyLogDao = new StudyLogDao(getActivity());
}

private OnClickListener btnClickListener = new OnClickListener() {
@Override
public void onClick(View v) {

studyLogDao.deleteByUserId(userId);
loadData();
new AlertDialog.Builder(getActivity()).setTitle(getString(R.string.notify))
.setMessage(R.string.clearsuccess)
.setPositiveButton(getString(R.string.ok), null).show();
}
};
}

public class RecordAdapter extends BaseAdapter {

private Context mContext;
private List<StudyLog> records;
private LayoutInflater mLayoutInflater;
private StudyLogDao studyLogDao;

private static final int LIST_HEIGHT = 50;

public RecordAdapter(Context context, List<StudyLog> records){
this.mContext = context;
this.records = records;
this.mLayoutInflater = LayoutInflater.from(context);
studyLogDao = new StudyLogDao(context);
}

@Override
public int getCount() {
// TODO Auto-generated method stub
if(records == null)
return 0;
return records.size();
}

@Override
public Object getItem(int position) {
// TODO Auto-generated method stub
return records.get(position);
}

@Override
public long getItemId(int position) {
return 0;
}

@Override
public View getView(final int position, View convertView, ViewGroup parent) {
// TODO Auto-generated method stub
ViewHolder viewHolder = null;
if(convertView == null) {
viewHolder = new ViewHolder();
convertView = mLayoutInflater.inflate(R.layout.item_record_list, null);
viewHolder.tvName = (TextView) convertView.findViewById(R.id.rtv_name);
viewHolder.tvRecord = (TextView) convertView.findViewById(R.id.rtv_record);
viewHolder.btnDelete = (Button) convertView.findViewById(R.id.recorddel);
//设置行高度
AbsListView.LayoutParams params=new AbsListView.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, LayoutManager.dip2px(mContext, LIST_HEIGHT));
convertView.setLayoutParams(params);
convertView.setTag(viewHolder);
}else {
viewHolder = (ViewHolder) convertView.getTag();
}

convertView.setOnTouchListener(new OnTouchListener() {
StudyLog studyLog = null;
float x, ux;
public boolean onTouch(View v, MotionEvent event) {
if (event.getAction() == MotionEvent.ACTION_DOWN) {
v.setBackgroundResource(R.color.dongao_orange);
x = event.getX();
}else if (event.getAction() == MotionEvent.ACTION_UP) {
v.setBackgroundResource(android.R.color.white);
ux = event.getX();
if (ux - x > 10) {
removeListItem(v,position,false);
}else{
studyLog = records.get(position);
if(studyLog.getStatus() == View.VISIBLE){
studyLog.setStatus((short) View.GONE);
}
notifyDataSetChanged();

Bundle bundle = studyLog.getParams();
if (bundle.getBoolean("isClose")) {
new AlertDialog.Builder(mContext)
.setTitle("提示")
.setMessage("很抱歉，本课程已关闭")
.setPositiveButton("确定",null).show();
return true;
}
Intent intent = new Intent(mContext, PlayVideoActivity.class);
intent.putExtras(bundle);
mContext.startActivity(intent);
}
}else{
v.setBackgroundResource(android.R.color.white);
}
return true;
}
});
StudyLog record = records.get(position);
viewHolder.tvName.setText(record.getSectionName());
viewHolder.tvRecord.setText(record.getLog());
viewHolder.btnDelete.setVisibility(record.getStatus());
return convertView;
}

public void removeListItem(final View v, final int position, final boolean delete) {
// TODO Auto-generated method stub
final Animation animation = (Animation) AnimationUtils.loadAnimation(mContext, R.anim.item_anim);
animation.setAnimationListener(new AnimationListener() {
boolean run = false;
ViewHolder viewHolder = null;
View view;
StudyLog record;
public void onAnimationStart(Animation animation) {}
public void onAnimationRepeat(Animation animation) {}
public void onAnimationEnd(Animation animation) {
if(run){
return;
}
//view = v.findViewById(R.id.recorddel);
viewHolder = (ViewHolder) v.getTag();
view = viewHolder.btnDelete;
record = records.get(position);
if(delete) {
//records.remove(position);
studyLogDao.deleteById(record.getUid());
setRecords(studyLogDao.queryByUserId(record.getUserId()));
record.setStatus((short)View.GONE);
//record.put("visibility", String.valueOf(View.GONE));
}else{
if(record.getStatus() == View.GONE){
record.setStatus((short)View.VISIBLE);
}else{
record.setStatus((short)View.GONE);
}
//record.put("visibility", String.valueOf(View.VISIBLE));
view.setOnClickListener(new OnClickListener(){

@Override
public void onClick(View paramView) {
// TODO Auto-generated method stub
removeListItem(v,position,true);
}

});
}
notifyDataSetChanged();
animation.cancel();
run = true;
}
});
v.startAnimation(animation);
}

private final static class ViewHolder{

TextView tvName;
TextView tvRecord;
Button btnDelete;
}

public List<StudyLog> getRecords() {
return records;
}

public void setRecords(List<StudyLog> records) {
this.records = records;
this.notifyDataSetChanged();
}

public void clear() {
// TODO Auto-generated method stub
records.clear();
this.notifyDataSetChanged();
}
}

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android">
<translate android:fromXDelta="0" android:toXDelta="100%p"
android:duration="300" />
</set>

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<RelativeLayout
android:id="@+id/norecord"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<ImageView
android:id="@+id/recordiv"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_centerVertical="true"
android:src="@drawable/record"
/>

<TextView
android:id="@+id/recordtv"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@id/recordiv"
android:layout_centerHorizontal="true"
android:layout_marginTop="8dip"
android:text="没有学习记录，快去学习吧！"
android:textSize="17sp" />
</RelativeLayout>
<RelativeLayout
android:id="@+id/recordlist"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<ListView
android:id="@+id/record_learning_lv"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_margin="15dp"
android:divider="@null"
/>
<Button
android:id="@+id/clear"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignParentRight="true"
android:text="@string/clear"
android:layout_marginRight="15dp"
android:layout_marginBottom="25dp"
android:textSize="17sp"
android:textColor="@android:color/white"
android:background="@drawable/btn_clear_selected"
/>
</RelativeLayout>
</LinearLayout>

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent" >

</RelativeLayout>

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