称为第二个活动我有startActivityForResult()调用称为FlavorList的活动,这是从数据库中填充的列表视图。我想,当我点击列表中的一个项目时,它会返回到用数据调用它的活动(EditRecipe)。通过EditRecipe中的方法showAddFlavorDialog()调用startActivityForResult(),该方法打开一个警告对话框。当我点击在FlavorList的项目,它只是坐在那里,并在EditRecipe调用startActivityForResult()和onActivityResult什么也不做从startActivityForResult不打烊
的showAddFlavorDialog():
protected void showAddFlavorDialog(){
LayoutInflater layoutInflater = LayoutInflater.from(EditRecipe.this);
View promptView = layoutInflater.inflate(R.layout.add_recipe_flavor_alert, null);
AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(EditRecipe.this);
alertDialogBuilder.setView(promptView);
final EditText percentageET = (EditText) promptView.findViewById(R.id.is_flavorpercentage);
final TextView flavorNameTV = (TextView) promptView.findViewById(R.id.txt_flavor_name);
final TextView flavorVendorTV = (TextView) promptView.findViewById(R.id.txt_flavor_vendor);
final LinearLayout flavorLayout = (LinearLayout) promptView.findViewById(R.id.add_flavor_layout);
flavorLayout.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent i = new Intent(EditRecipe.this, FlavorList.class);
request_Code = 1;
startActivityForResult(i, request_Code);
if(tempFlavorName != null) {
flavorNameTV.setText(tempFlavorName);
flavorVendorTV.setText(tempFlavorVendor);
}
}
});
alertDialogBuilder.setCancelable(false)
.setPositiveButton("OK", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
}
})
.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
dialog.cancel();
}
});
addFlavorAlert = alertDialogBuilder.create();
addFlavorAlert.show();
}//end showAddFlavorDialog
public void onActivityResult(int requestCode, int resultCode, Intent data)
{
if(requestCode == request_Code)
{
if(resultCode == RESULT_OK)
{
Bundle extras = getIntent().getExtras();
tempFlavorName = extras.getString("FLAVOR_NAME");
tempFlavorVendor = extras.getString("FLAVOR_VENDOR");
tempFlavorWeight = extras.getDouble("FLAVOR_WEIGHT");
}
}
}
在FlavorList列表视图的侦听器。
listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long viewId) {
Cursor cursor = (Cursor) listView.getItemAtPosition(position);
_id = dbManager.getFlavorID(cursor);
flavorName = dbManager.getFlavorName(cursor);
flavorVendor = dbManager.getFlavorVendor(cursor);
flavorBase = dbManager.getFlavorBase(cursor);
flavorWeight = String.valueOf(dbManager.getFlavorWeight(cursor));
int callingActivity = getIntent().getIntExtra("CALLING_ACTIVITY", 0);
switch (callingActivity) {
case (Constants.FROM_MAIN):
showModifyDialog();
break;
case (Constants.FROM_EDIT_RECIPE):
Intent returnIntent = new Intent();
returnIntent.putExtra("FLAVOR_NAME", flavorName);
returnIntent.putExtra("FLAVOR_VENDOR", flavorVendor);
returnIntent.putExtra("FLAVOR_WEIGHT", flavorWeight);
setResult(RESULT_OK, returnIntent);
finish();
break;
}//end switch-case
}
});
添加日志你的情况(Constants.FROM_EDIT_RECIPE)之前完成(),并检查该程序到达那里与否。 –
当你做出你的意图时,Intent i = new Intent(EditRecipe.this,FlavorList.class); ,你没有增加额外的东西。然后在FlavorList中,您要求额外的“CALLING_ACTIVITY”。我认为int callingActivity返回零,因为intent找不到CALLING_ACTIVITY。所以你的switch语句不匹配零并且通过。祝你好运!尝试putExtra()方法。 – flobacca
是的,我忘了做FROM_EDIT_RECIPE情况下的putExtra。在Muddassir指出要检查它去那里后,在@flobacca后看到你的评论,但你绝对是对的。 – MarinheiroTX