public boolean add(E e) {//添加数据

        throw new RuntimeException("Stub!");

    }

    public void add(int index, E element) {//通过索引添加数据

        throw new RuntimeException("Stub!");

    }

    public boolean remove(Object o) {//移除数据

        throw new RuntimeException("Stub!");

    }

    public E remove(int index) {//通过索引移除数据

        throw new RuntimeException("Stub!");

    }

    public void clear() {//清除所有数据

        throw new RuntimeException("Stub!");

    }

    public void notifyDataSetChanged() {//刷新ListView

        throw new RuntimeException("Stub!");

    }

    <LinearLayout

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:orientation="horizontal">

        <Button

            android:layout_width="wrap_content"

            android:layout_height="wrap_content"

            android:text="添加数据"

            android:id="@+id/addbtn"/>

        <Button

            android:layout_width="wrap_content"

            android:layout_height="wrap_content"

            android:text="指定位置添加数据"

            android:id="@+id/addbtn1"/>

    </LinearLayout>

    <LinearLayout

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:orientation="horizontal">

        <Button

            android:layout_width="wrap_content"

            android:layout_height="wrap_content"

            android:text="删除数据"

            android:id="@+id/Remove"/>

        <Button

            android:layout_width="wrap_content"

            android:layout_height="wrap_content"

            android:text="指定位置删除数据"

            android:id="@+id/Remove1"/>

        <Button

            android:layout_width="wrap_content"

            android:layout_height="wrap_content"

            android:text="删除所有数据"

            android:id="@+id/clearAll"/>

    </LinearLayout>

    public void add(Custom custom){

        if (aData == null){

            aData = new LinkedList<>();

        }

        aData.add(custom);

        notifyDataSetChanged();

    }

    public void add(int position,Custom custom){

        if (aData == null){

            aData = new LinkedList<>();

        }

        aData.add(position,custom);

        notifyDataSetChanged();

    }

    public void remove(Custom custom){

        if (aData !=null){

            aData.remove(custom);

        }

        notifyDataSetChanged();

    }

    public void remove(int postition){

        if (aData !=null){

            aData.remove(postition);

        }

        notifyDataSetChanged();

    }

    public void clear() {

        if(aData != null) {

            aData.clear();

        }

        notifyDataSetChanged();

    }

public class LoginActivity extends AppCompatActivity implements AdapterView.OnItemClickListener,OnClickListener{

    private String[] names = new String[]{"猪八戒","孙悟空","唐僧"};

    private String[] says = new String[]{"饿了","吃俺老孙一棒","紧箍咒"};

    private  int[] images = new int[]{R.drawable.icon,R.drawable.icon,R.drawable.icon};

    private Button btnAdd,addBtn1,removeBtn,removeBtn1,clearBtn;

    private CustomAdapter customAdapter = null;

    private Custom custom_1 = null;

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_login);

        btnAdd = (Button)findViewById(R.id.addbtn);

        btnAdd.setOnClickListener(this);

        addBtn1 = (Button)findViewById(R.id.addbtn1);

        addBtn1.setOnClickListener(this);

        removeBtn = (Button)findViewById(R.id.Remove);

        removeBtn.setOnClickListener(this);

        removeBtn1 = (Button)findViewById(R.id.Remove1);

        removeBtn1.setOnClickListener(this);

        clearBtn = (Button)findViewById(R.id.clearAll);

        clearBtn.setOnClickListener(this);

        ListView list_test = (ListView) findViewById(R.id.listview);

        final LayoutInflater inflater = LayoutInflater.from(this);

        View headView = inflater.inflate(R.layout.list_header, null, false);

        View footView = inflater.inflate(R.layout.list_header, null, false);

        List<Custom> aData = new LinkedList<Custom>();

        for (int i=0;i<names.length;i++){

            aData.add(new Custom(names[i],says[i],images[i]));

        }

        //添加表头和表尾需要写在setAdapter方法调用之前！！！

        list_test.addHeaderView(headView);

        list_test.addFooterView(footView);

        customAdapter = new CustomAdapter((LinkedList<Custom>)aData,LoginActivity.this);

        list_test.setAdapter(customAdapter);

        list_test.setOnItemClickListener(this);

    }

    @Override

    public void onClick(View view){

        switch (view.getId()){

            case R.id.addbtn:

                custom_1 = new Custom("沙和尚","呵呵呵",R.drawable.icon);

                customAdapter.add(custom_1);

                break;

            case R.id.addbtn1:

                customAdapter.add(2,new Custom("指定","假的",R.drawable.icon));

                break;

            case R.id.Remove:

                customAdapter.remove(custom_1);

                break;

            case R.id.Remove1:

                //判断是否越界 省略

                customAdapter.remove(2);

                break;

            case R.id.clearAll:

                customAdapter.clear();

                break;

        }

    }

}