点击listview的item时，需要让隐藏的view显示出来，原理很简单，就是在点击item后更新adapter并让隐藏的view可见，使用gone
贴图：1.
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3.再次点击任意项回到图片1
代码：public class MainActivity extends Activity implements OnItemClickListener, OnItemLongClickListener{
private ListView noteBookslist;
private NoteBookAdapter noteBookAdapter;
private List<String> fileTypeList;
private int currentPosition = -1;
private int mSingleChoiceID = -1;
private String[] mItems;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
initView();
setData();
}
private void initView() {
noteBookslist = (ListView) findViewById(R.id.notebook_list);
noteBookslist.setOnItemClickListener(this);
noteBookslist.setOnItemLongClickListener(this);
}
private void setData() {
fileTypeList = new ArrayList<String>();
for (int i = 0; i < 30; i++) {
fileTypeList.add("my test " + i);
}
if (noteBookAdapter == null) {
noteBookAdapter = new NoteBookAdapter(this, fileTypeList);
noteBookslist.setAdapter(noteBookAdapter);
} else {
noteBookAdapter.notifyDataSetChanged();
}
}
@Override
protected void onResume() {
updateNoteBookList();
super.onResume();
}
private void updateNoteBookList() {
if (noteBookAdapter != null) {
setData();
noteBookAdapter.notifyDataSetChanged(); //通过此方法用于同志adapter的更新，即调用getView（）
}
}
@Override
public void onItemClick(AdapterView<?> listview, View arg1, int position, long arg3) {
currentPosition = -1;
noteBookAdapter.notifyDataSetChanged();
}
@Override
public boolean onItemLongClick(AdapterView<?> listview, View arg1, int position, long arg3) {
Vibrator vibrator = (Vibrator) getSystemService(VIBRATOR_SERVICE);
vibrator.vibrate(40);
currentPosition = position;
noteBookAdapter.notifyDataSetChanged();
return true;
}
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_BACK) {
this.finish();
}
return super.onKeyDown(keyCode, event);
}
private Handler handler = new Handler() {
public void handleMessage(android.os.Message msg) {
if (msg.what == 1) {
noteBookAdapter.notifyDataSetChanged();//数据库发生改变时更新adapter
}
}
};
class NoteBookAdapter extends BaseAdapter {
private Context context;
private LayoutInflater inflater;
private List<String> fileTypeList;
public NoteBookAdapter(Activity activity, List<String> fileTypeList) {
this.context = activity;
this.fileTypeList = fileTypeList;
inflater = LayoutInflater.from(context);
}
public int getCount() {
return fileTypeList.size();
}
public int getItemViewType(int position) {
return position;
}
public Object getItem(int arg0) {
return fileTypeList.get(arg0);
}
public long getItemId(int position) {
return position;
}
public View getView(final int position, View convertView, ViewGroup parent) {
ViewHolder holder = null;
if (convertView == null) {
convertView = inflater.inflate(R.layout.item_comm_note, parent, false);
holder = new ViewHolder();
holder.fileNameText = (TextView) convertView.findViewById(R.id.item_name);
holder.fileTimeText = (TextView) convertView.findViewById(R.id.item_time);
holder.fileSizeText = (TextView) convertView.findViewById(R.id.item_pm);
holder.linearLayout = (LinearLayout) convertView.findViewById(R.id.layout_other);
holder.openLinearLayout = (LinearLayout) convertView.findViewById(R.id.item_open);
holder.editLinearLayout = (LinearLayout) convertView.findViewById(R.id.item_edit);
holder.moveLinearLayout = (LinearLayout) convertView.findViewById(R.id.item_move);
holder.deleteLinearLayout = (LinearLayout) convertView.findViewById(R.id.item_delete);
convertView.setTag(holder);
} else {
holder = (ViewHolder) convertView.getTag();
}
String strs = fileTypeList.get(position);
holder.fileNameText.setText(strs);
holder.fileTimeText.setText("");
holder.fileSizeText.setText("");
if (position == currentPosition) {
holder.linearLayout.setVisibility(View.VISIBLE);
holder.openLinearLayout.setClickable(true);
holder.editLinearLayout.setClickable(true);
holder.moveLinearLayout.setClickable(true);
holder.deleteLinearLayout.setClickable(true);
holder.openLinearLayout.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
currentPosition = -1;
}
});
holder.editLinearLayout.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
currentPosition = -1;
}
});
holder.moveLinearLayout.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
AlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this);
mSingleChoiceID = -1;
builder.setIcon(android.R.drawable.ic_dialog_info);
builder.setTitle("移动");
builder.setSingleChoiceItems(mItems, 0, new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int whichButton) {
mSingleChoiceID = whichButton;
}
});
builder.setPositiveButton("确定", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int whichButton) {
if (mSingleChoiceID > 0) {
currentPosition = -1;
handler.sendEmptyMessage(1);
}
}
});
builder.setNegativeButton("取消", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int whichButton) {
}
});
builder.create().show();
}
});
holder.deleteLinearLayout.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
currentPosition = -1;
fileTypeList.remove(position);
handler.sendEmptyMessage(1);
}
});
} else {
holder.linearLayout.setVisibility(View.GONE);
holder.openLinearLayout.setClickable(false);
holder.editLinearLayout.setClickable(false);
holder.moveLinearLayout.setClickable(false);
holder.deleteLinearLayout.setClickable(false);
}
return convertView;
}
class ViewHolder {
public TextView fileNameText;
public TextView fileTimeText;
public TextView fileSizeText;
public LinearLayout linearLayout;
public LinearLayout openLinearLayout;
public LinearLayout editLinearLayout;
public LinearLayout moveLinearLayout;
public LinearLayout deleteLinearLayout;
}
}
}