我希望有人能帮助我。我需要实现一个“级联”警报对话框系统。用户插入一系列信息，如流，从对话传递到另一个对话，将数据存储在数组中。如果验证了某个条件，则在此流程结束时，我将数组的数据存储到数据库中。
这是我可以实现的代码：
这是实现流程的循环，由 onMenuItemClick 事件启动
count=0;
do{
AlertDialog dialog;
dialog = alertSequence(view,label,edit);
dialog.show();
}while(count<4);
这就是alertSequence()功能
public AlertDialog alertSequence(View v,TextView t,EditText e){
AlertDialog.Builder builder = new AlertDialog.Builder(getApplicationContext());
final EditText edit = e;
switch(count){
case 0:
builder.setView(v);
t.setText("Inserisci il titolo per il nuovo canto");
builder.setPositiveButton("Continua", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
String elem = edit.getText().toString().trim();
if(elem.equals(null) || elem.length()==0){
// non faccio nulla
}
else{
info[count] = elem;
count++;
}
}
}).setNegativeButton("Annulla", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
count = 10;
dialog.cancel();
}
});
break;
case 1:
builder.setView(v);
t.setText("Inserisci l'autore per il nuovo canto");
builder.setPositiveButton("Continua", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
String elem = edit.getText().toString().trim();
if(elem.equals(null) || elem.length()==0){
// non faccio nulla
}
else{
info[count] = elem;
count++;
}
}
}).setNegativeButton("Annulla", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
count = 10;
dialog.cancel();
}
});
break;
case 2:
builder.setMessage("Seleziona la categoria da assegnare");
int i=1;
String query = "SELECT titolo FROM categorie WHERE titolo<>'uncategorized' ORDER BY titolo ASC";
Cursor c = mydb.select(query);
if(!c.equals(null)){
options = new String[c.getCount()+1];
options[0] = "(annulla)";
while(c.moveToNext()){
options[i] = c.getString(0);
i++;
}
}
c.close();
mydb.close();
builder.setCancelable(false);
builder.setItems(options, new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
if(options[which].equals("(annulla)"))
count = 10;
else{
info[count] = options[which];
count++;
}
}
});
break;
case 3:
builder.setView(v);
t.setText("Inserisci il testo per il nuovo canto");
edit.setInputType(InputType.TYPE_TEXT_FLAG_MULTI_LINE);
edit.setHeight((int) 300d);
edit.setGravity(Gravity.LEFT | Gravity.TOP);
edit.setHorizontallyScrolling(false);
builder.setPositiveButton("Continua", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
String elem = edit.getText().toString().trim();
if(elem.equals(null) || elem.length()==0){
// non faccio nulla
}
else{
info[count] = elem;
count++;
}
}
}).setNegativeButton("Annulla", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
count = 10;
dialog.cancel();
}
});
break;
}
return builder.create();
}
它适合我的范围吗？只是这产生了一个WindowManager$BadTokenException -当我在 do-while 循环中调用时，无法添加窗口令牌 null 不适用于应用程序。dialog.show()可能是什么？感谢帮助。
编辑：
谢谢黑带，我解决了。但是现在还有另一个错误，Illegalstateexception - 指定的孩子已经有一个父 android，您必须首先 removeView() 从孩子的父母上调用dialog.show()。我有这个问题的红点，但我不明白如何解决它。有什么建议么？