转载：Android GridView 实现合并单元格效果
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内容图文
package com.example.test;
import android.app.Activity;
import android.content.Context;
import android.graphics.Color;
import android.os.Bundle;
import android.view.Gravity;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AbsListView;
import android.widget.BaseAdapter;
import android.widget.GridView;
import android.widget.LinearLayout;
import android.widget.TextView;
public class MainActivity extends Activity {
private static GridView mGridView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
mGridView = new GridView(getApplicationContext());
MAdapter adapter = new MAdapter(mGridView.getContext(), new String[]{
"你好1","你好2","你好3","你好4","你好5","你好6","你好7","你好8","你好9","你好10",
"你好11","你好12","你好13","你好14","你好15","你好16","你好17","你好18","你好19","你好20",
"你好21","你好22","你好23","你好24","你好25","你好26","你好27","你好28","你好29","你好30"
});
LinearLayout headLayout = new LinearLayout(getApplicationContext());
LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(
LinearLayout.LayoutParams.FILL_PARENT, 300);
headLayout.setLayoutParams(params);
headLayout.setBackgroundColor(Color.RED);
mGridView.setAdapter(adapter);
mGridView.setNumColumns(2);
setContentView(mGridView);
}
static class MAdapter extends BaseAdapter{
private String[] items;
private Context context;
public MAdapter(Context context, String[] items) {
this.items = items;
this.context = context;
}
@Override
public int getCount() {
return items.length;
}
@Override
public Object getItem(int position) {
return position;
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public int getItemViewType(int position) {
return super.getItemViewType(position);
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
TextView textView = null;
if (position %4 == 0) {
textView = new MyText(context);
AbsListView.LayoutParams params = new AbsListView.LayoutParams(
AbsListView.LayoutParams.FILL_PARENT, 100);
textView.setLayoutParams(params);
textView.setTextColor(Color.BLACK);
textView.setTextSize(20);
textView.setText(items[position]);
textView.setBackgroundColor(0x88FF0000);
textView.setGravity(Gravity.LEFT | Gravity.CENTER_VERTICAL);
} else {
textView = new TextView(context);
AbsListView.LayoutParams params = new AbsListView.LayoutParams(
AbsListView.LayoutParams.FILL_PARENT, 200);
textView.setLayoutParams(params);
textView.setTextColor(Color.BLACK);
textView.setTextSize(20);
textView.setText(items[position]);
textView.setVisibility(View.VISIBLE);
if (position %4 == 1) { // GridView的行高由该行最后一个元素的高度决定
AbsListView.LayoutParams params2 = new AbsListView.LayoutParams(
AbsListView.LayoutParams.FILL_PARENT, 100);
textView.setLayoutParams(params2);
textView.setVisibility(View.INVISIBLE);
}
textView.setGravity(Gravity.CENTER);
}
return textView;
}
class MyText extends TextView {
public MyText(Context context) {
super(context);
}
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
int targetWidth = mGridView.getMeasuredWidth()
- mGridView.getPaddingLeft()
- mGridView.getPaddingRight();
widthMeasureSpec = MeasureSpec.makeMeasureSpec(targetWidth,
MeasureSpec.getMode(widthMeasureSpec));
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
}
}
}
}
原文：http://my.oschina.net/u/1395670/blog/516432
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