android 引导界面的实现

现在越来越多程序都有引导页面了。

网上资料不全。现在自己实现下。

下图是总的目录结构。

/**
* 实现
* @author dujinyang
*
*/

顺序是： OneAcitivity -->MainActivity -> TwoActivity

然后第2次进去就是：OneActivity -> TwoActivity

代码里都有注释的了，这里就不多说了。

OneActivity的代码如下：

[java]
package cn.djy.activity;

import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.os.Handler;

/**
* 开机动画
* @author Administrator
*
*/
public class OneActivity extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        // TODO Auto-generated method stub
        super.onCreate(savedInstanceState);
        setContentView(R.layout.one);

        boolean flag=this.isFirstEnter(getApplicationContext(), this.getClass().getName());
        if(flag)
            mHandler.sendEmptyMessageDelayed(SWITCH_GUIDACTIVITY,4000);
        else
            mHandler.sendEmptyMessageDelayed(SWITCH_TWOACTIVITY, 4000);

    }

    //***********************************************************************
    //判断应用是否初次加载，读取SharedPreferences 的字段
    //***********************************************************************
    private static final String SHAREDPREFERENCES_NAME="yang";
    private static final String KEY_GUIDE_ACTIVITY="Open";
    /**
     * mResultStr.equalsIgnoreCase("false") 返回FALSE
     * TRUE 则为空值
     * @param context
     * @param className
     * @return boolean
     */
    private boolean isFirstEnter(Context context,String className){
        if(context==null || className ==null || "".equalsIgnoreCase(className)) return false;
        String mResultStr=context.getSharedPreferences(SHAREDPREFERENCES_NAME,Context.MODE_WORLD_READABLE).getString(KEY_GUIDE_ACTIVITY, "");
        if(mResultStr.equalsIgnoreCase("false"))
            return false;
        else
            return true;
    }


    //****************************************
    //Handler:跳转至不同页面
    //****************************************
    private final static int SWITCH_TWOACTIVITY=1000; //主页

    private final static int SWITCH_GUIDACTIVITY=1001; //滑动手势
    private Handler mHandler=new Handler(){
        public void handleMessage(android.os.Message msg) {
            switch (msg.what) {
            case SWITCH_TWOACTIVITY:
                    Intent intent=new Intent();
                    intent.setClass(OneActivity.this,TwoActivity.class);
                    OneActivity.this.startActivity(intent);
                // OneActivity.this.finish();
                break;
            case SWITCH_GUIDACTIVITY:
                    Intent intents=new Intent();
                    intents.setClass(OneActivity.this,MainActivity.class);
                    OneActivity.this.startActivity(intents);
                // OneActivity.this.finish();
                    break;
            }
            super.handleMessage(msg);
        };
    };

}

package cn.djy.activity;

import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.os.Handler;

/**
* 开机动画
* @author Administrator
*
*/
public class OneActivity extends Activity {

@Override
protected void onCreate(Bundle savedInstanceState) {
  // TODO Auto-generated method stub
  super.onCreate(savedInstanceState);
  setContentView(R.layout.one);

  boolean flag=this.isFirstEnter(getApplicationContext(), this.getClass().getName());
  if(flag)
   mHandler.sendEmptyMessageDelayed(SWITCH_GUIDACTIVITY,4000);
  else
   mHandler.sendEmptyMessageDelayed(SWITCH_TWOACTIVITY, 4000);

}

//***********************************************************************
//判断应用是否初次加载，读取SharedPreferences 的字段
//***********************************************************************
private stat

补充：移动开发 , Android ,