Android练习之HorizontalScrollView

 

Gallery被弃用，HorizontalScrollView取代之 code

package com.example.flexd2;

import android.os.Bundle;
import android.os.Handler;
import android.app.Activity;
import android.util.Log;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.Gallery;
import android.widget.HorizontalScrollView;
import android.widget.LinearLayout;
import android.widget.TextView;

/**
 * HorizontalScrollView滚动显示
 */
public class MainActivity extends Activity {
    
    private HorizontalScrollView hsv1;
    private LinearLayout linearLayout;
    private Button bt2;
    private TextView tv1;
    private final Handler handler = new Handler();
    
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        
/*        Gallery glr = (Gallery)findViewById(R.id.glr1);
        glr.setAdapter(new ImageAdapter (){
        });*/
        
        hsv1 = (HorizontalScrollView)findViewById(R.id.hsv1);
        linearLayout = (LinearLayout)findViewById(R.id.linearLayout);
        bt2 = (Button)findViewById(R.id.bt2);
        tv1 = (TextView)findViewById(R.id.tv1);
        bt2.setOnClickListener(listener);
    }
    
    //定义Button监听器对象
    private Button.OnClickListener listener = new Button.OnClickListener(){
        @Override
        public void onClick(View v) {
            Log.i("Tag","listener------->");
            handler.post(thread);//线程放入队列
        }
    };
    
    //定义线程对象
    private Runnable thread = new Runnable(){
        @Override
        public void run() {
            Log.i("Tag","thread------->");
            int off = linearLayout.getWidth() - hsv1.getWidth();//一般HorizontalScrollView都比layout宽
            Log.i("Tag","off-->" + off);
            if(off > 0){
                hsv1.scrollTo(off, 0);//滚动到宽出的距离，即滚到最后
            }
        }
    };

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.activity_main, menu);
        return true;
    }

}