Android启动界面渐变及数据初始化处理

来源：互联网发布：凡人网络购物系统编辑：程序博客网时间：2024/06/05 10:39
package com.sinomaps.bjmapvr.ui;import android.content.Intent;import android.content.SharedPreferences;import android.os.Bundle;import android.os.Handler;import android.os.Message;import android.preference.PreferenceManager;import android.support.v7.app.AppCompatActivity;import android.view.View;import android.view.animation.AlphaAnimation;import android.view.animation.Animation;import android.widget.TextView;import android.widget.Toast;import com.lyt.baselib.utility.Utility;import com.sinomaps.bjmapvr.R;import com.sinomaps.bjmapvr.utility.MyUtility;import java.lang.ref.WeakReference;public class SplashActivity extends AppCompatActivity {    public static final int MAX_WAITING_TIME = 2000;    private boolean bAnimationEnd = false;    private boolean bCheckDataIsOK = false;    private MyHandler handler = new MyHandler(this);    static class MyHandler extends Handler{        WeakReference<SplashActivity> mActivity;        TextView mTextViewInfo;        MyHandler(SplashActivity activity){            mActivity = new WeakReference<>(activity);        }        @Override        public void handleMessage(Message msg) {            super.handleMessage(msg);            SplashActivity splashActivity = mActivity.get();            if(splashActivity == null) return;            mTextViewInfo = (TextView)mActivity.get().findViewById(R.id.textview_info);            switch(msg.what){                case 0:                    mTextViewInfo.setText(msg.getData().getString("msg"));                    break;                case -1://出现错误                    mTextViewInfo.setText(msg.getData().getString("msg"));                    Toast.makeText(splashActivity, msg.getData().getString("msg"), Toast.LENGTH_SHORT).show();                    break;            }        }    }    private void sendMsg(String info,int what){        Message msg = handler.obtainMessage();        Bundle data = new Bundle();        data.putString("msg", info);        msg.setData(data);        msg.what = what;        handler.sendMessage(msg);    }    private void sendInfo(String info){        sendMsg(info, 0);    }    private void sendError(String info){        sendMsg(info, -1);    }    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        View view = View.inflate(this, R.layout.activity_splash, null);        setContentView(view);        // 渐变展示启动屏        AlphaAnimation aa = new AlphaAnimation(0.3f, 1.0f);        aa.setDuration(MAX_WAITING_TIME);        aa.setAnimationListener(new Animation.AnimationListener() {            @Override            public void onAnimationStart(Animation animation) {            }            @Override            public void onAnimationRepeat(Animation animation) {            }            @Override            public void onAnimationEnd(Animation animation) {                bAnimationEnd = true;                redirectTo();            }        });        view.startAnimation(aa);        //检查软件配套数据是否最新        new Thread(){            @Override            public void run(){                checkData();            }        }.start();    }    private void checkData() {        try {            SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this);            String oldVersion = prefs.getString("DataVersion", "0000-00-00");            String newVersion = getResources().getString(R.string.data_version);            if (oldVersion.compareTo(newVersion) < 0) {                sendInfo("正在初始化数据，请稍候...");                Utility.unzipAssetsDataToDisk(this, getString(R.string.data_name), MyUtility.getProjectBathPath(this));                sendInfo("数据初始化完毕。");                SharedPreferences.Editor editor = prefs.edit();                editor.putString("DataVersion", newVersion);                editor.apply();            }        } catch (Exception e) {            e.printStackTrace();            sendError("初始化数据出错");            return;        }        bCheckDataIsOK = true;        redirectTo();    }    private void redirectTo(){        //当动画和数据检查同时执行完后才跳转        if(bAnimationEnd && bCheckDataIsOK){            Intent intent = new Intent(this, MainActivity.class);            startActivity(intent);            finish();        }    }}
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