Android(安卓)闹钟 开发过程记录（七）
16lz
2021-01-24
listview中的item两种方式弹出菜单。
第一种：
//为listview的item设置长按时弹出一个菜单lv_alarm_clock.setOnCreateContextMenuListener(new OnCreateContextMenuListener() {@Overridepublic void onCreateContextMenu(ContextMenu menu, View v,ContextMenuInfo menuInfo) {menu.setHeaderTitle("操作"); menu.add(0, 0, 0, "修改闹钟"); menu.add(0, 1, 0, "删除闹钟");}}); //菜单条目被选中的所要执行的操作@Overridepublic boolean onContextItemSelected(MenuItem item) {AdapterContextMenuInfo menuInfo = (AdapterContextMenuInfo) item.getMenuInfo();final int position = menuInfo.position;switch (item.getItemId()) {case 0://修改闹钟Intent alarmSettingIntent = new Intent(AlarmClockListActivity.this, AlarmClockSettingActivity.class);alarmSettingIntent.putExtras(getBundle(position));startActivity(alarmSettingIntent);break;case 1://删除闹钟AlertDialog.Builder builder = new Builder(this);builder.setTitle("提示");builder.setMessage("要删除此闹钟吗？");builder.setPositiveButton("确定", new DialogInterface.OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {int id = infos.get(position).getId();AlarmManager alarmManager = (AlarmManager) getSystemService(Context.ALARM_SERVICE);Intent intent = new Intent(AlarmClockListActivity.this, AlarmClockReceiver.class);intent.setAction("cn.edu.usts.cardhelper.alarmclock");intent.putExtras(getBundle(position));PendingIntent pi = PendingIntent.getBroadcast(AlarmClockListActivity.this, id, intent, PendingIntent.FLAG_UPDATE_CURRENT);alarmManager.cancel(pi);Log.i(TAG, "------闹钟:"+id+"的广播取消成功！----");dao = new AlarmClockDao(AlarmClockListActivity.this);dao.delete(id);startThreadToReadSavedAlarmClockInfos();}});builder.setNegativeButton("取消", new OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {}});builder.show();break;}return super.onContextItemSelected(item);} 第二种：
lv.setOnItemLongClickListener(lv_OnItemLongClickListener);
private OnItemLongClickListener lv_OnItemLongClickListener = new OnItemLongClickListener() {@Overridepublic boolean onItemLongClick(AdapterView<?> parent, View view,final int position, long id) {final String[] items = new String[]{"重命名","删除录音"};Builder builder = new AlertDialog.Builder(AlarmClockChooseRingsRecordActivity.this).setTitle("文件操作").setItems(items, new DialogInterface.OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {if(items[which].equals("重命名")){Builder builder = new AlertDialog.Builder(AlarmClockChooseRingsRecordActivity.this).setTitle("重命名");final EditText et_reName = new EditText(AlarmClockChooseRingsRecordActivity.this);et_reName.setText(audioInfos.get(position).getAudioName());builder.setView(et_reName);builder.setPositiveButton("保存", new DialogInterface.OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {String name = et_reName.getText().toString().trim();String filePath = audioInfos.get(position).getAudioUri().toString();if("".equals(name)){ToastUtil.showShortToast(AlarmClockChooseRingsRecordActivity.this, "名称不能为空");return;}else{File oldFile = new File(filePath);Log.i(TAG, "---------------"+oldFile+"--------------");File newFile = new File(filePath.substring(0, filePath.lastIndexOf("/")), name+".amr");Log.i(TAG, "---------------"+newFile+"--------------");oldFile.renameTo(newFile);startThreadToReFreshRecordsList();}}});builder.setNegativeButton("取消", new DialogInterface.OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {}});builder.show();}else{Uri uri = audioInfos.get(position).getAudioUri();new File(uri.toString()).delete();startThreadToReFreshRecordsList();}}});builder.show();return false;}}; 更多相关文章
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