【发布时间】：2016-01-17 11:33:59
【问题描述】：
我有一个列表视图，当在列表项上滑动时会给出包含按钮的菜单（我使用了swipe menu ListView 库来实现它）。现在，当滑动列表项并在其中单击一个按钮时，我希望将列表项添加到存档中并显示在另一个活动中（为此，我正在使用 sharedpreference）。添加到 sharedpreference 并显示到其他活动中可以正常工作。但是，当在显示档案列表的档案活动中，我想在按下滑动菜单中的按钮时删除列表项。在这里应用程序崩溃了
显示添加档案的我的活动
public class ProActivity extends Activity
{
SwipeMenuListView archiveseList;
ArchivePreferences archvprefernces;
List<CodeList> archives;
SharedPreference shrdprefernces;
FinalAdapter fnladpter;
List <CodeList> codelist = null;
@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.pro_layout);
archvprefernces = new ArchivePreferences();
shrdprefernces = new SharedPreference();
archives = archvprefernces.getArchives(ProActivity.this);
codelist = new ArrayList<CodeList>();
if (archives == null) {
showAlert(getResources().getString(R.string.nofav),
getResources().getString(R.string.nofavmsg));
} else {
if (archives.size() == 0) {
showAlert(
getResources().getString(R.string.nofav),
getResources().getString(R.string.nofavmsg));
}
archiveseList = (SwipeMenuListView) findViewById(R.id.pro_layoutListView);
if (archives != null) {
fnladpter = new FinalAdapter(ProActivity.this, archives);
archiveseList.setAdapter(fnladpter);
SwipeMenuCreator creator = new SwipeMenuCreator() {
@Override
public void create(SwipeMenu menu) {
// create "open" item
SwipeMenuItem openItem = new SwipeMenuItem(ProActivity.this);
// set item background
openItem.setBackground(new ColorDrawable(Color.rgb(0xC9, 0xC9,
0xCE)));
// set item width
openItem.setWidth(dp2px(90));
// set item title
openItem.setTitle("Open");
// set item title fontsize
openItem.setTitleSize(18);
// set item title font color
openItem.setTitleColor(Color.WHITE);
// add to menu
menu.addMenuItem(openItem);
// create "delete" item
SwipeMenuItem favoriteItem = new SwipeMenuItem(ProActivity.this);
// set item background
favoriteItem.setBackground(new ColorDrawable(Color.rgb(0xF9,
0x3F, 0x25)));
// set item width
favoriteItem.setWidth(dp2px(90));
// set a icon
favoriteItem.setIcon(R.drawable.unfavorite);
// add to menu
menu.addMenuItem(favoriteItem);
SwipeMenuItem info = new SwipeMenuItem(ProActivity.this);
info.setBackground(new ColorDrawable(Color.BLUE));
info.setTitle(R.id.beg_list_itemTextView);
//set item width
info.setWidth(dp2px(90));
// set a icon
info.setIcon(R.drawable.ic_launcher);
// add to menu
menu.addMenuItem(info);
}
};
// set creator
archiveseList.setMenuCreator(creator);
archiveseList.setOnMenuItemClickListener(new SwipeMenuListView.OnMenuItemClickListener() {
@Override
public boolean onMenuItemClick(int position, SwipeMenu menu, int index) {
//ApplicationInfo item = mAppList.get(position);
switch (index) {
case 0:
// open
break;
case 1:
// favorite
break;
case 2 :
ImageView alphimg = (ImageView) findViewById(R.id.beg_list_itemImageView);
String tag = alphimg.getTag().toString();
if (checkArchivedItem(codelist.get(position))) {
archvprefernces.removeArchive(ProActivity.this, codelist.get(position));
alphimg.setTag("noarchive");
codelist.add(codelist.get(position));
fnladpter.remove(archives.get(position));
fnladpter.notifyDataSetChanged();
Toast.makeText(ProActivity.this, getString(R.string.archive_removed), Toast.LENGTH_SHORT).show();
}else {
archvprefernces.addArchive(ProActivity.this, codelist.get(position));
alphimg.setTag("yesarchive");
codelist.remove(codelist.get(position));
fnladpter.notifyDataSetChanged();
}
break;
}
return false;
}
private boolean checkArchivedItem(CodeList checkcode) {
boolean check = false;
List<CodeList> archives = archvprefernces.getArchives(ProActivity.this);
if (archives != null) {
for (CodeList codes : archives) {
if (codes.equals(checkcode)) {
check = true;
break;
}
}
}
return check;
}
private Object getItem(int position)
{
return codelist.get(position);
}
});
archiveseList.setOnSwipeListener(new SwipeMenuListView.OnSwipeListener() {
@Override
public void onSwipeStart(int position) {
// swipe start
}
@Override
public void onSwipeEnd(int position) {
// swipe end
}
});
// set MenuStateChangeListener
archiveseList.setOnMenuStateChangeListener(new SwipeMenuListView.OnMenuStateChangeListener() {
@Override
public void onMenuOpen(int position) {
}
@Override
public void onMenuClose(int position) {
}
});
archiveseList.setSwipeDirection(SwipeMenuListView.DIRECTION_LEFT);
archiveseList.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView<?> parent, View arg1,
int position, long arg3) {
}
});
public void showAlert(String title, String message) {
if (ProActivity.this != null && !ProActivity.this.isFinishing()) {
AlertDialog alertDialog = new AlertDialog.Builder(ProActivity.this)
.create();
alertDialog.setTitle(title);
alertDialog.setMessage(message);
alertDialog.setCancelable(false);
// setting OK Button
alertDialog.setButton(AlertDialog.BUTTON_POSITIVE, "OK",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
// activity.finish();
getFragmentManager().popBackStackImmediate();
}
});
alertDialog.show();
}
}
private int dp2px(int dp) {
return (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, dp,
getResources().getDisplayMetrics());
}
@Override
public void onBackPressed() {
super.onBackPressed();
overridePendingTransition(R.anim.left_to_right, R.anim.right_to_left);
}
}
我的日志猫
01-17 16:38:26.033 12088 12088 D AndroidRuntime Shutting down VM
01-17 16:38:26.051 12088 12088 E AndroidRuntime FATAL EXCEPTION: main
01-17 16:38:26.051 12088 12088 E AndroidRuntime Process: com.enlightenme.pac, PID: 12088
01-17 16:38:26.051 12088 12088 E AndroidRuntime java.lang.IndexOutOfBoundsException: Invalid index 2, size is 0
01-17 16:38:26.051 12088 12088 E AndroidRuntime at java.util.ArrayList.throwIndexOutOfBoundsException(ArrayList.java:255)
01-17 16:38:26.051 12088 12088 E AndroidRuntime at java.util.ArrayList.get(ArrayList.java:308)
01-17 16:38:26.051 12088 12088 E AndroidRuntime at com.enlightenme.pac.ProActivity$100000001.onMenuItemClick(ProActivity.java:209)
01-17 16:38:26.051 12088 12088 E AndroidRuntime at com.baoyz.swipemenulistview.SwipeMenuListView$100000000.onItemClick(SwipeMenuListView.java:78)
01-17 16:38:26.051 12088 12088 E AndroidRuntime at com.baoyz.swipemenulistview.SwipeMenuView.onClick(SwipeMenuView.java:85)
01-17 16:38:26.051 12088 12088 E AndroidRuntime at android.view.View.performClick(View.java:4780)
01-17 16:38:26.051 12088 12088 E AndroidRuntime at android.view.View$PerformClick.run(View.java:19866)
01-17 16:38:26.051 12088 12088 E AndroidRuntime at android.os.Handler.handleCallback(Handler.java:739)
01-17 16:38:26.051 12088 12088 E AndroidRuntime at android.os.Handler.dispatchMessage(Handler.java:95)
01-17 16:38:26.051 12088 12088 E AndroidRuntime at android.os.Looper.loop(Looper.java:135)
01-17 16:38:26.051 12088 12088 E AndroidRuntime at android.app.ActivityThread.main(ActivityThread.java:5254)
01-17 16:38:26.051 12088 12088 E AndroidRuntime at java.lang.reflect.Method.invoke(Native Method)
01-17 16:38:26.051 12088 12088 E AndroidRuntime at java.lang.reflect.Method.invoke(Method.java:372)
01-17 16:38:26.051 12088 12088 E AndroidRuntime at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)
【问题讨论】：
标签： android listview sharedpreferences