[英]Spinner Item leads to Activity (Android Studio)
我從幾個月前開始編程,而stackoverflow始終是解決我的問題的好地方。 所以我的代碼越來越好,但是現在我要再次需要您的幫助。
編程:在我的App中,您可以從微調器中選擇項目,然后轉到下一頁,依此類推。 您必須從多個微調器中進行選擇,直到獲得結果...
一些代碼預覽(代碼有效,但是我現在不得不添加一些操作,而且我不知道如何...
package com.sio.fmf;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.Spinner;
import android.widget.Button;
import android.view.ViewGroup;
import android.view.LayoutInflater;
import android.widget.TextView;
public class Koerperform extends AppCompatActivity {
String[] koerperform = {" ", "spindel- oder torpedoförmig", "langgestreckt", "hochrückig", "schlangenförmig", "welsartig", "grundelartig"};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.koerperform);
Spinner mySpinner = (Spinner)findViewById(R.id.spinner);
mySpinner.setAdapter(new MyCustomAdapter(Koerperform.this,R.layout.spinner_layout, koerperform));
}
public void onClick(View v){}
public class MyCustomAdapter extends ArrayAdapter<String> {
public MyCustomAdapter(Context context, int textViewResourceId, String[] objects) {
super(context, textViewResourceId, objects);
}
private Button getSwtitchact;
{
final Button switchact = (Button) findViewById(R.id.button3);
switchact.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Intent act = new Intent(view.getContext(), Maulstellung.class);
startActivity(act);
}
});
}
@Override
public View getDropDownView(int position, View convertView, ViewGroup parent) {
return getCustomView(position, convertView, parent);
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
return getCustomView(position, convertView, parent);
}
public View getCustomView(int position, View convertView, ViewGroup parent) {
LayoutInflater inflater = getLayoutInflater();
View row = inflater.inflate(R.layout.spinner_layout, parent, false);
TextView label = (TextView) row.findViewById(R.id.koerper);
label.setText(koerperform[position]);
if (position == 0) {
label.setTextColor(0xFFF00000);
}
return row;
}
}
}
因此,在此應用程序的狀態下,您可以從微調器中選擇字符串,然后如果按Botton 3,它將變為類Maulstellung
我的問題:我希望當選擇字符串“ a”時,它在按下按鈕3后進入頁面xy,而當選擇字符串“ b”時,它在按下按鈕3后進入頁面xyz,...,依此類推每個字符串...
希望你能幫我,對我英語不好
也許這個布局文件有幫助
<pre>
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"
android:layout_height="match_parent" android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
android:paddingBottom="@dimen/activity_vertical_margin"
tools:context=".Koerperform"
android:background="#023738">
<ImageView
android:layout_width="fill_parent"
android:layout_height="100dp"
android:id="@+id/imageView1"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:background="@drawable/header" />
<ImageView
android:layout_width="400dp"
android:layout_height="100dp"
android:id="@+id/imageView5"
android:background="@drawable/frageeins"
android:layout_below="@+id/space4"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true" />
<ImageView
android:layout_width="fill_parent"
android:layout_height="120dp"
android:id="@+id/imageView6"
android:background="@drawable/fischeins"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_below="@+id/imageView5" />
<Spinner
android:id="@+id/spinner"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="@+id/imageView6"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:clickable="false"
android:contextClickable="false"
/>
<Button
android:layout_width="220dp"
android:layout_height="60dp"
android:id="@+id/button3"
android:layout_marginTop="69dp"
android:background="@drawable/costum_button_weiter_gehts"
android:layout_below="@+id/imageView6"
android:layout_centerHorizontal="true" />
<Space
android:layout_width="30dp"
android:layout_height="20dp"
android:layout_below="@+id/imageView1"
android:layout_centerHorizontal="true"
android:id="@+id/space4" />
</RelativeLayout>
我將以這種方式:
不確定這是您所需要的。
在全局聲明String selectedValue
和Spinner mySpinner
(在String[] koerperform
之后添加)。
刪除mySpinner旁邊的Spinner
:
Spinner mySpinner = (Spinner)findViewById(R.id.spinner);
在getSwtitchact內部,更改為此
private Button getSwtitchact;
{
final Button switchact = (Button) findViewById(R.id.button3);
switchact.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
selectedValue=mySpinner.getSelectedItem().toString(); // here you get the selected items from spinner
if(selectedValue.equals("a"))
{
Intent act = new Intent(view.getContext(), xy.class);
startActivity(act);
}
else if(selectedValue.equals("B"))
{
Intent act = new Intent(view.getContext(), xyZ.class);
startActivity(act);
}
else
{
......
}
}
});
}
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