Java 使用警报对话框从列表视图中删除项目
我有一个包含项目的Java 使用警报对话框从列表视图中删除项目,java,android,listview,Java,Android,Listview,我有一个包含项目的ListView,我想创建一个警报对话框,当我长时间单击某个项目时,该对话框会删除这些项目onlong单击某个项目会显示一个AlertDialog,如果我单击yes,它会删除该项目 这是我的密码 listView.setOnItemLongClickListener(new AdapterView.OnItemLongClickListener() { @Override public boolean onItemLongClick(AdapterView<
ListView
,我想创建一个警报对话框,当我长时间单击某个项目时,该对话框会删除这些项目onlong单击某个项目会显示一个AlertDialog
,如果我单击yes,它会删除该项目
这是我的密码
listView.setOnItemLongClickListener(new AdapterView.OnItemLongClickListener() {
@Override
public boolean onItemLongClick(AdapterView<?> adapterView, View view, int i, long l) {
new AlertDialog.Builder(MainActivity.this)
.setIcon(android.R.drawable.ic_dialog_alert)
.setMessage("Are You Sure You Want to Delete This Note?!")
.setTitle("Attempt to Delete A Note")
.setPositiveButton("YES", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialogInterface, int i) {
try {
notesList.remove(i);
arrayAdapter.notifyDataSetChanged();
Toast.makeText(MainActivity.this, "ooooooh No!!", Toast.LENGTH_SHORT).show();
} catch (Exception e) {
e.printStackTrace();
}
}
})
.setNegativeButton("NO", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialogInterface, int i) {
Toast.makeText(MainActivity.this, "Good Choice", Toast.LENGTH_SHORT).show();
}
})
.show();
return true;
}
});
listView.setOnItemLongClickListener(新的AdapterView.OnItemLongClickListener(){
@凌驾
公共布尔值长单击(AdapterView AdapterView,视图视图,int i,long l){
新建AlertDialog.Builder(MainActivity.this)
.setIcon(android.R.drawable.ic_对话框_警报)
.setMessage(“您确定要删除此便笺吗?!”)
.setTitle(“尝试删除注释”)
.setPositiveButton(“是”,新的DialogInterface.OnClickListener(){
@凌驾
公共void onClick(DialogInterface,inti){
试一试{
注释列表。删除(i);
arrayAdapter.notifyDataSetChanged();
Toast.makeText(MainActivity.this,“oooooh No!!”,Toast.LENGTH\u SHORT.show();
}捕获(例外e){
e、 printStackTrace();
}
}
})
.setNegativeButton(“否”,新的DialogInterface.OnClickListener(){
@凌驾
公共void onClick(DialogInterface,inti){
Toast.makeText(MainActivity.this,“好的选择”,Toast.LENGTH_SHORT.show();
}
})
.show();
返回true;
}
});
我认为问题在于警报对话框click listner的“I”位置,您需要用户列出单击的项目位置,以便从列表中删除项目
请使用以下代码:
listView.setOnItemLongClickListener(new AdapterView.OnItemLongClickListener() {
@Override
public boolean onItemLongClick(AdapterView<?> adapterView, View view, int position, long l) {
new AlertDialog.Builder(MainActivity.this)
.setIcon(android.R.drawable.ic_dialog_alert)
.setMessage("Are You Sure You Want to Delete This Note?!")
.setTitle("Attempt to Delete A Note")
.setPositiveButton("YES", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialogInterface, int i) {
try {
if(notesList!=null){
notesList.remove(position);
arrayAdapter.notifyDataSetChanged();
Toast.makeText(MainActivity.this, "ooooooh No!!", Toast.LENGTH_SHORT).show();
}
}catch (Exception e){
e.printStackTrace();
}
}
})
.setNegativeButton("NO", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialogInterface, int i) {
Toast.makeText(MainActivity.this, "Good Choice", Toast.LENGTH_SHORT).show();
}
})
.show();
return true;
}
});
listView.setOnItemLongClickListener(新的AdapterView.OnItemLongClickListener(){
@凌驾
公共布尔值长单击(AdapterView AdapterView、视图视图、整型位置、长l){
新建AlertDialog.Builder(MainActivity.this)
.setIcon(android.R.drawable.ic_对话框_警报)
.setMessage(“您确定要删除此便笺吗?!”)
.setTitle(“尝试删除注释”)
.setPositiveButton(“是”,新的DialogInterface.OnClickListener(){
@凌驾
公共void onClick(DialogInterface,inti){
试一试{
if(notesList!=null){
注释列表。移除(位置);
arrayAdapter.notifyDataSetChanged();
Toast.makeText(MainActivity.this,“oooooh No!!”,Toast.LENGTH\u SHORT.show();
}
}捕获(例外e){
e、 printStackTrace();
}
}
})
.setNegativeButton(“否”,新的DialogInterface.OnClickListener(){
@凌驾
公共void onClick(DialogInterface,inti){
Toast.makeText(MainActivity.this,“好的选择”,Toast.LENGTH_SHORT.show();
}
})
.show();
返回true;
}
});
我认为问题在于警报对话框click listner的“I”位置,您需要用户列出单击的项目位置,以便从列表中删除项目
请使用以下代码:
listView.setOnItemLongClickListener(new AdapterView.OnItemLongClickListener() {
@Override
public boolean onItemLongClick(AdapterView<?> adapterView, View view, int position, long l) {
new AlertDialog.Builder(MainActivity.this)
.setIcon(android.R.drawable.ic_dialog_alert)
.setMessage("Are You Sure You Want to Delete This Note?!")
.setTitle("Attempt to Delete A Note")
.setPositiveButton("YES", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialogInterface, int i) {
try {
if(notesList!=null){
notesList.remove(position);
arrayAdapter.notifyDataSetChanged();
Toast.makeText(MainActivity.this, "ooooooh No!!", Toast.LENGTH_SHORT).show();
}
}catch (Exception e){
e.printStackTrace();
}
}
})
.setNegativeButton("NO", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialogInterface, int i) {
Toast.makeText(MainActivity.this, "Good Choice", Toast.LENGTH_SHORT).show();
}
})
.show();
return true;
}
});
listView.setOnItemLongClickListener(新的AdapterView.OnItemLongClickListener(){
@凌驾
公共布尔值长单击(AdapterView AdapterView、视图视图、整型位置、长l){
新建AlertDialog.Builder(MainActivity.this)
.setIcon(android.R.drawable.ic_对话框_警报)
.setMessage(“您确定要删除此便笺吗?!”)
.setTitle(“尝试删除注释”)
.setPositiveButton(“是”,新的DialogInterface.OnClickListener(){
@凌驾
公共void onClick(DialogInterface,inti){
试一试{
if(notesList!=null){
注释列表。移除(位置);
arrayAdapter.notifyDataSetChanged();
Toast.makeText(MainActivity.this,“oooooh No!!”,Toast.LENGTH\u SHORT.show();
}
}捕获(例外e){
e、 printStackTrace();
}
}
})
.setNegativeButton(“否”,新的DialogInterface.OnClickListener(){
@凌驾
公共void onClick(DialogInterface,inti){
Toast.makeText(MainActivity.this,“好的选择”,Toast.LENGTH_SHORT.show();
}
})
.show();
返回true;
}
});
listView.setAdapter(适配器);
setOnItemClickListener(新的AdapterView.OnItemClickListener(){
@凌驾
public void onItemClick(AdapterView父对象、视图、最终整型位置、长id){
新建AlertDialog.Builder(MainActivity.this)
.setIcon(android.R.drawable.ic_对话框_警报)
.setMessage(“您确定要删除此便笺吗?!”)
.setTitle(“尝试删除注释”)
.setPositiveButton(“是”,新的DialogInterface.OnClickListener(){
@凌驾