自动导航SharedPreferences



package com.example.jd.view.activity;

import android.content.Intent;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.view.View;
import android.widget.TextView;

import com.example.jd.R;
import com.example.jd.presenter.MainPresenter;
import com.example.jd.view.interfaces.IMainView;
import com.youth.banner.Banner;

import java.util.Timer;
import java.util.TimerTask;

public class MainActivity extends BaseActivity<MainPresenter> implements IMainView {

    private TextView main_text;
    int time = 3;
    private Handler handler = new Handler() {
        @Override
        public void handleMessage(Message msg) {
            super.handleMessage(msg);
            if (msg.what == 0) {
                int t = (int) msg.obj;
                if (t >= 0) {
                    //赋值
                    main_text.setText(t + "s");
                } else {
                    timer.cancel();
                    //存值
                    editor.putBoolean("daohang", true);
                    //提交
                    editor.commit();
                    //跳转
                    Intent intent = new Intent(MainActivity.this, TiaoKuanActivity.class);
                    startActivity(intent);
                    finish();
                }
            }
        }
    };
    private Timer timer;
    private SharedPreferences.Editor editor;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

    }

    @Override
    protected void initData() {
        //自动导航
        SharedPreferences sharedPreferences = getSharedPreferences("daohang", MODE_PRIVATE);
        editor = sharedPreferences.edit();
        boolean daohang = sharedPreferences.getBoolean("daohang", false);//定义为false
        if (daohang) {
            //直接跳转
            Intent intent = new Intent(MainActivity.this, TiaoKuanActivity.class);
            startActivity(intent);
            finish();
        } else {
            //倒计时
            timer = new Timer();
            TimerTask task = new TimerTask() {
                @Override
                public void run() {
                    time--;
                    Message msg = Message.obtain();
                    msg.what = 0;
                    msg.obj = time;
                    handler.sendMessage(msg);
                }
            };
            timer.schedule(task, 2000, 1000);
        }
    }

    @Override
    MainPresenter setPresenter() {
        return new MainPresenter();
    }

    @Override
    protected void initView() {
        main_text = findViewById(R.id.main_text);
    }

    @Override
    protected int setLayout() {
        return R.layout.activity_main;
    }

    @Override
    public void onSuccess(String s) {

    }
}