具有ListAdapter布局的Android列表Android Studio

Question

I'm working with android studio and I have this list and I can't get the layout to work.(You'll notice I have a listener that opens another activity when you click on a single item, and that works just fine). Here's my activity_estoque.xml file:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="match_parent"
    android:layout_height="match_parent">
        <TextView
        android:id="@+id/label"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:padding="10dip"
        android:textSize="16sp"
        android:textStyle="bold" >
    </TextView>
</LinearLayout>

and this is the estoque.java class, that uses the .xml file above:

package com.example.asus.mingausfashionmoda;

import android.app.Activity;
import android.app.ListActivity;
import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.LinearLayout;
import android.widget.ListView;
import android.widget.TextView;

public class estoque extends ListActivity {
    @Override
    protected void onCreate (Bundle savedInstanceState){

        super.onCreate(savedInstanceState);

        //string que pega do query
        String[] adobe_products = {"SANSUMG", "LG", "MOTOROLA", "Apple"};

        this.setListAdapter(new ArrayAdapter<String>(this, R.layout.activity_estoque, R.id.label, adobe_products));
        ListView lv = getListView();
        //listening to single item in list view
        lv.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                //selected item

                LinearLayout ll = (LinearLayout) view;
                TextView tv = (TextView) ll.findViewById(R.id.label);
                final String product = tv.getText().toString();
                //String product = ((TextView) view).getText().toString();

                //lauching new activity to single item
                Intent i = new Intent(getApplicationContext(), estoqueSingle.class);
                //sending data to new activity
                i.putExtra("product", product);
                startActivity(i);
            }
        });
     }

}

I added some pictures to help you understand what I want and what I'm getting(sorry for bad paiting): 1 - The screen on the left is what I should see, according to the Android Studio activity_estoque.xml Design session, and the right one is what I actually get(Notice the "Mingau's fashion moda" thing missing, I really want this blue thing): ( What I should get vs what I'm getting )

2 - Now, the left screen is what I want, a top single button and the list bellow. The right one is what I'm receiving after adding a button on the activity_estoque.xml file(code bellow): ( What I want vs what I get )

this is the activity_estoque.xml file after I add the button:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="match_parent"
    android:layout_height="match_parent">
        <TextView
        android:id="@+id/label"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:padding="10dip"
        android:textSize="16sp"
        android:textStyle="bold" >
    </TextView>
    <Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/btnttt"
        android:text="This is a button"
        />
</LinearLayout>

First I thought that I should add a setContentView(R.layout.activity_estoque); on the onCreat method , like this:

protected void onCreate (Bundle savedInstanceState){

        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_estoque);
        //string que pega do query
        String[] adobe_products = {"SANSUMG", "LG", "MOTOROLA", "Apple"};

but if I do that I get the following error, and I'm not sure if it makes any sense to add this setContentView... :

java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.asus.mingausfashionmoda/com.example.asus.mingausfashionmoda.estoque}: java.lang.RuntimeException: Your content must have a ListView whose id attribute is 'android.R.id.list'

and this:

at com.example.asus.mingausfashionmoda.estoque.onCreate(estoque.java:20)

this is what I have on estoque.java.20:

setContentView(R.layout.activity_estoque);

Anyone can help? Thanks.

Answer 1

You are extending a ListActivity, so when you start the activity it will use the default layout. If you try to do setContentView(R.layout.activity_estoque); in the code then the activity will expect your layout to hava list view with the id "list".

Edit-- Change your layout to

 <?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="match_parent"
    android:layout_height="match_parent">
        <TextView
        android:id="@+id/label"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:padding="10dip"
        android:textSize="16sp"
        android:textStyle="bold" >
    </TextView>
    <Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/btnttt"
        android:text="This is a button"
        />
<ListView android:id="@android:id/list"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:background="#00FF00"
        android:layout_weight="1"
        android:drawSelectorOnTop="false"/>
</LinearLayout>

and

and do setContentView(R.layout.activity_estoque) in onCreate

You will need to create a new layout for your list item view, which you need to pass to the ArrayAdapter For eg: activity_test.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical" android:layout_width="match_parent"
    android:layout_height="match_parent">
<TextView
    android:id="@+id/label1"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content" />
</LinearLayout>

then change this this.setListAdapter(new ArrayAdapter<String>(this, R.layout.activity_estoque, R.id.label, adobe_products)); to this.setListAdapter(new ArrayAdapter<String>(this, R.layout.activity_test, R.id.label1, adobe_products));

Answer 2

What you want to achieve is explained here as example here . And the blue bar above you see is actually achievable using Action Bar example here . This action bar is configurable for color, icon, title, sub title and the menus(show/not to show).