android textview 自动换行 例子

【核心代码】

package com.example.tao;

import java.util.Random;

import android.app.Activity;
import android.os.Bundle;
import android.text.TextPaint;
import android.util.DisplayMetrics;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.Button;
import android.widget.LinearLayout;
import android.widget.ListView;
import android.widget.TextView;

public class MainActivity extends Activity implements OnClickListener {
	String tag = "Text_dongtai";
	String str1[] = { "网络过来的数据", "网络过来的数", "网络过来的", "网络过来", "网络过", "网络", "网" };
	private int see_w;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		lv = (ListView) findViewById(R.id.lv_inner);
		init();
		Button but = (Button) findViewById(R.id.but);
		but.setOnClickListener(this);
	}

	private void init() {
		DisplayMetrics dm = new DisplayMetrics();
		getWindowManager().getDefaultDisplay().getMetrics(dm);
		see_w = dm.widthPixels;
		adapter = new MyAdapter();
		lv.setAdapter(adapter);

	}
	class MyAdapter extends BaseAdapter{

		@Override
		public int getCount() {
			return 10;
		}

		@Override
		public Object getItem(int position) {
			return position;
		}

		@Override
		public long getItemId(int position) {
			return position;
		}

		@Override
		public View getView(int position, View convertView, ViewGroup parent) {
			LinearLayout v = (LinearLayout) View.inflate(getApplicationContext(), R.layout.lv_item, null);
			Random r = new Random();
			int length = 0;
			for (int i = 0; i < 7; i  ) {
				int x = r.nextInt(7);//得到任意文本
				
				TextView tv = new TextView(MainActivity.this);// 新建textview
				String str = str1[x];
				tv.setText(str ",");
				
				v.addView(tv); 
				
				TextPaint paint = tv.getPaint();//获取textView的宽度
				int len = (int) paint.measureText(str);
				length  = len;

				if(length>(see_w-180)){
					break;
				}				
			}
			Log.i(tag,length "");
			return v;
		}
		
	}
	private ListView lv;
	private MyAdapter adapter;
	@Override
	public void onClick(View v) {
		adapter.notifyDataSetChanged();
	}
}