多条目加载

public class MainActivity extends AppCompatActivity {

String [] texts ={"习大大","特郎谱","普京","小安","三胖"};

//图片资源

int[] images ={R.mipmap.jx_left_listitem_1,R.mipmap.jx_left_listitem_2,R.mipmap.jx_left_listitem_3,

R.mipmap.jx_left_listitem_4,

R.mipmap.jx_left_listitem_5};

private List<Data> list;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

initData();

ListView lv = (ListView) findViewById(R.id.lv);

lv.setAdapter(new MyAdapter());

}

/**

* 初使化数据

*/

private void initData() {

list = new ArrayList<>();

int index1 =0;

int index2 =0;

int index3 =0;

for (int x=0;x<10;x++) {

Data data = new Data();

if (x%3==0){

//我认为是textView

data.setText(texts[index1%texts.length]);

data.setType(0);

//为了防止脚标越界，还有索引有须续的增加

index1 = (index1+1)%texts.length;

}else if (x%2==0){

//是一个textView和一个imageView

data.setText(texts[index2]);

data.setImages(images[index2]);

data.setType(1);

index2 = (index2+1)%texts.length;

}else{

//上面一个textView和下面一个imageView

data.setText(texts[index3]);

data.setImages(images[index3]);

data.setType(2);

index3 = (index3+1)%texts.length;

}

//data.setText(texts[x]);

list.add(data);

}

}

class MyAdapter extends BaseAdapter{

@Override

public int getCount() {

return list.size();

}

/**

* 每个item的类型是什么

* @param position

* @return

*/

@Override

public int getItemViewType(int position) {

return list.get(position).getType();

}

/**

* item的类型的个数

* @return

*/

@Override

public int getViewTypeCount() {

return 3;

}

@Override

public Object getItem(int position) {

return null;

}

@Override

public long getItemId(int position) {

return 0;

}

@Override

public View getView(int position, View convertView, ViewGroup parent) {

ViewHolder1 holder1 = null;

ViewHolder2 holder2 = null;

ViewHolder3 holder3 = null;

//得到不同item的类型

int type = getItemViewType(position);

if(convertView==null){

switch (type){

case 0:

holder1 = new ViewHolder1();

convertView = View.inflate(MainActivity.this, R.layout.lv_itme1,null);

holder1.tv1 = (TextView) convertView.findViewById(R.id.lv_tv1);

convertView.setTag(holder1);

break;

case 1:

holder2 = new ViewHolder2();

convertView = View.inflate(MainActivity.this, R.layout.lv_itme2,null);

holder2.tv2 = (TextView) convertView.findViewById(R.id.lv_tv2);

holder2.iv2 = (ImageView) convertView.findViewById(R.id.lv_iv2);

convertView.setTag(holder2);

break;

case 2:

holder3 = new ViewHolder3();

convertView = View.inflate(MainActivity.this, R.layout.lv_itme3,null);

holder3.tv3 = (TextView) convertView.findViewById(R.id.lv_tv3);

holder3.iv3 = (ImageView) convertView.findViewById(R.id.lv_iv3);

convertView.setTag(holder3);

break;

}

}else{

//不为空,取出

switch (type){

case 0:

holder1 = (ViewHolder1) convertView.getTag();

break;

case 1:

holder2 = (ViewHolder2) convertView.getTag();

break;

case 2:

holder3 = (ViewHolder3) convertView.getTag();

break;

}

}

switch (type){

case 0:

holder1.tv1.setText(list.get(position).getText());

break;

case 1:

holder2.tv2.setText(list.get(position).getText());

holder2.iv2.setImageResource(list.get(position).getImages());

break;

case 2:

holder3.tv3.setText(list.get(position).getText());

holder3.iv3.setImageResource(list.get(position).getImages());

break;

}

return convertView;

}

class ViewHolder1{

TextView tv1;

}

class ViewHolder2{

TextView tv2;

ImageView iv2;

}

class ViewHolder3{

TextView tv3;

ImageView iv3;

}

}

}