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   源码介绍

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package com.example.welcome;

import android.app.Activity;
import android.content.Intent;
import android.view.GestureDetector;
import android.view.GestureDetector.OnGestureListener;
import android.os.Bundle;
import android.view.GestureDetector;
import android.view.Menu;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.RadioButton;
import android.widget.RadioGroup;
import android.widget.ViewFlipper;

public class MainActivity extends Activity implements OnGestureListener{

	
	private ViewFlipper viewFlipper;
	private GestureDetector detector;
	
	private RadioGroup rGroup;
	private RadioButton rButton1;
	private RadioButton rButton2;
	private RadioButton rButton3;
	private Button button1;
	private int temp;
	private RadioButton rs[]=new RadioButton[3];
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        viewFlipper=(ViewFlipper)findViewById(R.id.ViewFlipper);
        detector=new GestureDetector(this);
        rButton1=(RadioButton)findViewById(R.id.radioButton1);
        rButton2=(RadioButton)findViewById(R.id.radioButton2);
        rButton3=(RadioButton)findViewById(R.id.radioButton3);
        rs[0]=rButton1;
        rs[1]=rButton2;
        rs[2]=rButton3;
        button1=(Button)findViewById(R.id.button1);
        button1.setOnClickListener(new OnClickListener() {
			
			@Override
			public void onClick(View arg0) {
				// TODO Auto-generated method stub
				Intent intent=new Intent(MainActivity.this,welcome.class);
				startActivity(intent);
				MainActivity.this.finish();
			}
		});
        
    }

    private ImageView getImageView(int id) {
		ImageView imageView = new ImageView(this);
		imageView.setImageResource(id);
		return imageView;
	}

	public boolean onTouchEvent(MotionEvent event) {
		return this.detector.onTouchEvent(event);
	}

	public boolean onDown(MotionEvent e) {
		return false;
	}

	public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX,
			float velocityY) {

		if (e1.getX() - e2.getX() > 120) {
			viewFlipper.showNext();
			temp  ;
			rs[temp].setChecked(true);
			return true;
		} else if (e1.getX() - e2.getY() < -120) {
			viewFlipper.showPrevious();
			temp--;
			rs[temp].setChecked(true);
			return true;
		}
		return false;
	}

	public void onLongPress(MotionEvent e) {

	}

	public boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX,
			float distanceY) {
		return false;
	}

	public void onShowPress(MotionEvent e) {

	}

	public boolean onSingleTapUp(MotionEvent e) {
		return false;
	}

}