Android 如何设置onListItemLongClick以从数据库中列出?
我想显示一个包含(编辑和删除)的布局,这样当用户长按列表中的一个项目时,他将得到一个对话框,可以选择是删除还是编辑该项目 我该怎么做?并且认为Android 如何设置onListItemLongClick以从数据库中列出?,android,android-listview,onlongclicklistener,Android,Android Listview,Onlongclicklistener,我想显示一个包含(编辑和删除)的布局,这样当用户长按列表中的一个项目时,他将得到一个对话框,可以选择是删除还是编辑该项目 我该怎么做?并且认为 public class MissionAct extends ListActivity { private DbaseManager datasource; @Override public void onCreate(Bundle savedInstanceState) { super.onCrea
public class MissionAct extends ListActivity {
private DbaseManager datasource;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.addmission_activity);
datasource = new DbaseManager(this);
datasource.open(getBaseContext());
List<Missions> values = datasource.getAllMissions();
ArrayAdapter<Missions> adapter = new ArrayAdapter<Missions>(this,
android.R.layout.simple_list_item_1, values);
setListAdapter(adapter);
this.getListView().setLongClickable(true);
this.getListView().setOnItemLongClickListener(new OnItemLongClickListener() {
public boolean onItemLongClick(AdapterView<?> adpter, View v, int position, long id) {
Dialog dialog = new Dialog(getBaseContext());
dialog.setContentView(R.layout.dialg);
dialog.setTitle("Nouveau point");
dialog.show();
return true;
}
});
}
}
公共类任务扩展ListActivity{
专用DbaseManager数据源;
@凌驾
创建时的公共void(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.addmission_活动);
datasource=新的DbaseManager(此);
datasource.open(getBaseContext());
列表值=datasource.getAllMissions();
ArrayAdapter=新的ArrayAdapter(此,
android.R.layout.simple_list_item_1,值);
setListAdapter(适配器);
this.getListView().setLongClickable(true);
this.getListView().setOnItemLongClickListener(新的OnItemLongClickListener()){
长点击(AdapterView-adpter、视图v、整型位置、长id){
Dialog=新建对话框(getBaseContext());
setContentView(R.layout.dialg);
对话框.setTitle(“Nouveau point”);
dialog.show();
返回true;
}
});
}
}
错误日志是
04-29 13:42:45.048: E/Babel(31576): canonicalizeMccMnc: invalid mccmnc nullnull
04-29 13:42:46.067: E/dalvikvm(31611): Could not find class 'android.app.AppOpsManager', referenced from method box.a
04-29 13:42:46.957: E/CellLocation(30121): create GsmCellLocation
04-29 13:42:47.412: E/ActivityManager(245): mtprof entry can not found!
04-29 13:42:47.412: E/ActivityManager(245): java.io.FileNotFoundException: /proc/mtprof/status: open failed: ENOENT (No such file or directory)
04-29 13:42:47.412: E/ActivityManager(245): at libcore.io.IoBridge.open(IoBridge.java:448)
04-29 13:42:47.412: E/ActivityManager(245): at java.io.FileInputStream.<init>(FileInputStream.java:78)
04-29 13:42:47.412: E/ActivityManager(245): at java.io.FileInputStream.<init>(FileInputStream.java:105)
04-29 13:42:47.412: E/ActivityManager(245): at com.android.server.am.ActivityRecord.mtProf(ActivityRecord.java:852)
04-29 13:42:47.412: E/ActivityManager(245): at com.android.server.am.ActivityRecord.windowsDrawn(ActivityRecord.java:653)
04-29 13:42:47.412: E/ActivityManager(245): at com.android.server.am.ActivityRecord$Token.windowsDrawn(ActivityRecord.java:225)
04-29 13:42:47.412: E/ActivityManager(245): at com.android.server.wm.WindowManagerService$H.handleMessage(WindowManagerService.java:6994)
04-29 13:42:47.412: E/ActivityManager(245): at android.os.Handler.dispatchMessage(Handler.java:99)
04-29 13:42:47.412: E/ActivityManager(245): at android.os.Looper.loop(Looper.java:154)
04-29 13:42:47.412: E/ActivityManager(245): at com.android.server.wm.WindowManagerService$WMThread.run(WindowManagerService.java:754)
04-29 13:42:47.412: E/ActivityManager(245): Caused by: libcore.io.ErrnoException: open failed: ENOENT (No such file or directory)
04-29 13:42:45.048:E/Babel(31576):规范化mcmnc:invalid mccmnc nullnull
04-29 13:42:46.067:E/dalvikvm(31611):找不到从方法框.a引用的类“android.app.apppsManager”
04-29 13:42:46.957:E/CellLocation(30121):创建GsmCellLocation
04-29 13:42:47.412:E/ActivityManager(245):找不到mtprof条目!
04-29 13:42:47.412:E/ActivityManager(245):java.io.FileNotFoundException:/proc/mtprof/status:open failed:enoint(没有这样的文件或目录)
04-29 13:42:47.412:E/ActivityManager(245):位于libcore.io.IoBridge.open(IoBridge.java:448)
04-29 13:42:47.412:E/ActivityManager(245):位于java.io.FileInputStream。(FileInputStream.java:78)
04-29 13:42:47.412:E/ActivityManager(245):位于java.io.FileInputStream。(FileInputStream.java:105)
04-29 13:42:47.412:E/ActivityManager(245):位于com.android.server.am.ActivityRecord.mtProf(ActivityRecord.java:852)
04-29 13:42:47.412:E/ActivityManager(245):位于com.android.server.am.ActivityRecord.WindowsDrawed(ActivityRecord.java:653)
04-29 13:42:47.412:E/ActivityManager(245):位于com.android.server.am.ActivityRecord$Token.WindowsDrawed(ActivityRecord.java:225)
04-29 13:42:47.412:E/ActivityManager(245):位于com.android.server.wm.WindowManagerService$H.handleMessage(WindowManagerService.java:6994)
04-29 13:42:47.412:E/ActivityManager(245):位于android.os.Handler.dispatchMessage(Handler.java:99)
04-29 13:42:47.412:E/ActivityManager(245):位于android.os.Looper.loop(Looper.java:154)
04-29 13:42:47.412:E/ActivityManager(245):位于com.android.server.wm.WindowManagerService$WMThread.run(WindowManagerService.java:754)
04-29 13:42:47.412:E/ActivityManager(245):由以下原因引起:libcore.io.ErrnoException:打开失败:enoint(没有此类文件或目录)
您需要像这样为列表视图
添加一个OnItemLongClickListener
,以便在长时间单击项目时调用onItemLongClick
getListView().setOnItemLongClickListener(new AdapterView.OnItemLongClickListener() {
@Override
public boolean onItemLongClick(AdapterView<?> parent, View view, int position, long id) {
// do your other stuff here based on the list item position
return true;
}
});
getListView().setOnItemLongClickListener(新的AdapterView.OnItemLongClickListener()){
@凌驾
公共布尔值长单击(AdapterView父对象、视图视图、整型位置、长id){
//根据列表项位置在此处执行其他操作
返回true;
}
});
试试这个
及
编辑
您可以使用上下文菜单,也可以参考以下示例
您可以这样实现它
this.getListView().setLongClickable(true);
this.getListView().setOnItemLongClickListener(new OnItemLongClickListener() {
public boolean onItemLongClick(AdapterView<?> parent, View v, int position, long id) {
AlertDialog.Builder dialogBuilder = new AlertDialog.Builder(ctx);
dialogBuilder.setTitle("Title");
dialogBuilder.setMessage("Message?");
dialogBuilder.setPositiveButton("Edit", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
//Edit
}
});
dialogBuilder.setNegativeButton("Delete", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
//Delete
}
});
dialogBuilder.create().show();
return true;
}
});
this.getListView().setLongClickable(true);
this.getListView().setOnItemLongClickListener(新的OnItemLongClickListener()){
公共布尔值长单击(AdapterView父对象、视图v、整型位置、长id){
AlertDialog.Builder dialogBuilder=新建AlertDialog.Builder(ctx);
dialogBuilder.setTitle(“标题”);
设置消息(“消息?”);
dialogBuilder.setPositiveButton(“编辑”,新建DialogInterface.OnClickListener(){
@凌驾
public void onClick(DialogInterface dialog,int which){
//编辑
}
});
dialogBuilder.setNegativeButton(“删除”,新建DialogInterface.OnClickListener(){
@凌驾
public void onClick(DialogInterface dialog,int which){
//删除
}
});
dialogBuilder.create().show();
返回true;
}
});
您可以使用位置作为索引来访问列表元素。this.getListView().setLongClickable(true);
this.getListView().setLongClickable(true);
this.getListView().setOnItemLongClickListener(new OnItemLongClickListener() {
public boolean onItemLongClick(AdapterView<?> parent, View v, int position, long id) {
//set your dialog here
return true;
}
});
this.getListView().setOnItemLongClickListener(新的OnItemLongClickListener()){
公共布尔值长单击(AdapterView父对象、视图v、整型位置、长id){
//在这里设置对话框
返回true;
}
});
no dont work fatal exeption android.view.WindowManager$BadTokenException:无法添加窗口--标记null不适用于应用程序是否可以尝试创建全局变量Context mContext=this;并使用mContext此行AlertDialog.Builder dialogBuilder=新建AlertDialog.Builder(mContext)Dot work fatal exeption android.view.WindowManager$BadTokenException:无法添加窗口--令牌null不适用于应用程序dont work fatal exeption android.view.WindowManager$BadTokenException:无法添加窗口--令牌null不适用于应用程序我编辑了问题,所以现在我输入了编辑的代码和错误日志
this.getListView().setLongClickable(true);
this.getListView().setOnItemLongClickListener(new OnItemLongClickListener() {
public boolean onItemLongClick(AdapterView<?> parent, View v, int position, long id) {
//set your dialog here
return true;
}
});