倒计时只运行一次，tablayout和一个Drawlayout

于 2018-10-25 19:53:57 发布
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本文链接：https://blog.youkuaiyun.com/lixiaoliang0723/article/details/83385305
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本文探讨如何实现一个倒计时仅运行一次的功能，并结合TabLayout和自定义DrawLayout的使用，阐述在Android开发中创建动态交互界面的方法。通过实例解析，了解如何有效管理倒计时并在TabLayout中展示多个页面，同时利用DrawLayout实现滑动隐藏与显示效果。

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<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">

    <ImageView
        android:id="@+id/image"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:src="@drawable/bg" />
    <TextView
        android:id="@+id/text"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:gravity="center"
        android:text="3s"
        android:background="@drawable/shape"
        android:layout_alignParentRight="true"/>
</RelativeLayout>

<android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/dry"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".TwoActivity">
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical">
        <android.support.v4.view.ViewPager
            android:id="@+id/pager"
            android:layout_width="match_parent"
            android:layout_height="0dp"
            android:layout_weight="9"></android.support.v4.view.ViewPager>
        <RadioGroup
            android:id="@+id/radio"
            android:layout_width="match_parent"
            android:layout_height="0dp"
            android:layout_weight="1"
            android:orientation="horizontal"
            >
            <ImageView
                android:id="@+id/image1"
                android:src="@drawable/ac0"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:layout_weight="1"/>
            <ImageView
                android:id="@+id/image2"
                android:src="@drawable/ac2"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:layout_weight="1"/>
            <ImageView
                android:id="@+id/image3"
                android:src="@drawable/abw"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:layout_weight="1"/>

            </RadioGroup>
    </LinearLayout>
    <fragment
        class="bwie.com.yuekao1.fragment.Fragmentce"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_gravity="start"
        ></fragment>
</android.support.v4.widget.DrawerLayout>


import android.content.Intent;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.support.v7.app.AppCompatActivity;
import android.widget.ImageView;
import android.widget.TextView;

public class MainActivity extends AppCompatActivity {

    private ImageView image;
    private TextView text;
    int i=4;
    private SharedPreferences bbb;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        initView();
    }

    private void initView() {
        image = (ImageView) findViewById(R.id.image);
        text = (TextView) findViewById(R.id.text);
        handler.sendEmptyMessageDelayed(1,1000);

        bbb = getSharedPreferences("BBB", MODE_PRIVATE);
        boolean isbo = bbb.getBoolean("isbo", false);
        if (isbo){
            startActivity(new Intent(MainActivity.this,TwoActivity.class));
            finish();
        }
    }
    Handler handler= new Handler(){
        @Override
        public void handleMessage(Message msg) {
            i--;
            if (i>0){
                text.setText(i+"S");
                handler.sendEmptyMessageDelayed(1,1000);
            }else {
                SharedPreferences.Editor edit = bbb.edit();
                edit.putBoolean("isbo",true);
                edit.commit();
                startActivity(new Intent(MainActivity.this,TwoActivity.class));
                finish();
            }
        }
    };

    @Override
    protected void onDestroy() {
        super.onDestroy();
        if (handler!=null){
            handler.removeMessages(1);
            handler=null;
        }
    }
}

```package bwie.com.yuekao1;

import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentPagerAdapter;
import android.support.v4.view.ViewPager;
import android.support.v4.widget.DrawerLayout;
import android.support.v7.app.ActionBar;
import android.support.v7.app.ActionBarDrawerToggle;
import android.support.v7.app.AppCompatActivity;
import android.view.MenuItem;
import android.view.View;
import android.widget.ImageView;
import android.widget.RadioGroup;

import java.util.ArrayList;
import java.util.List;

import bwie.com.yuekao1.fragment.Fragment01;
import bwie.com.yuekao1.fragment.Fragment02;
import bwie.com.yuekao1.fragment.Fragment03;

public class TwoActivity extends AppCompatActivity {
    private ViewPager viewpager;
    private RadioGroup group;
    private DrawerLayout draw;
    private ActionBarDrawerToggle toggle;
    private ImageView image1;
    private ImageView image2;
    private ImageView image3;
    private List<Fragment> list;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_two);
        initView();
    }

    private void initView() {
        viewpager = findViewById(R.id.pager);
        image1 = findViewById(R.id.image1);
        image2 = findViewById(R.id.image2);
        image3 = findViewById(R.id.image3);
        image1.setImageResource(R.drawable.ac1);
        list = new ArrayList<>();
        list.add(new Fragment01());
        list.add(new Fragment02());
        list.add(new Fragment03());
        draw = findViewById(R.id.dry);
        group = findViewById(R.id.radio);
        draw.setDrawerLockMode(DrawerLayout.LOCK_MODE_UNDEFINED);
        initad();
        viewpager.setAdapter(new FragmentPagerAdapter(getSupportFragmentManager()) {
            @Override
            public Fragment getItem(int i) {
                return list.get(i);
            }

            @Override
            public int getCount() {
                return list.size();
            }
        });
        image1.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                image1.setImageResource(R.drawable.ac1);
                image2.setImageResource(R.drawable.ac2);
                image3.setImageResource(R.drawable.abw);
                viewpager.setCurrentItem(0);
            }
        });
        image2.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                image1.setImageResource(R.drawable.ac0);
                image2.setImageResource(R.drawable.ac3);
                image3.setImageResource(R.drawable.abw);
                viewpager.setCurrentItem(1);
            }
        });
        image3.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                image1.setImageResource(R.drawable.ac0);
                image2.setImageResource(R.drawable.ac2);
                image3.setImageResource(R.drawable.abx);
                viewpager.setCurrentItem(2);
            }
        });
        viewpager.addOnPageChangeListener(new ViewPager.OnPageChangeListener() {
            @Override
            public void onPageScrolled(int i, float v, int i1) {

            }

            @Override
            public void onPageSelected(int i) {
                switch (i) {
                    case 0:
                        image1.setImageResource(R.drawable.ac1);
                        image2.setImageResource(R.drawable.ac2);
                        image3.setImageResource(R.drawable.abw);
                        break;
                    case 1:
                        image1.setImageResource(R.drawable.ac0);
                        image2.setImageResource(R.drawable.ac3);
                        image3.setImageResource(R.drawable.abw);
                        break;
                    case 2:
                        image1.setImageResource(R.drawable.ac0);
                        image2.setImageResource(R.drawable.ac2);
                        image3.setImageResource(R.drawable.abx);
                        break;

                }
            }

            @Override
            public void onPageScrollStateChanged(int i) {

            }
        });
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        if (toggle.onOptionsItemSelected(item)) {
            return true;
        }
        return super.onOptionsItemSelected(item);
    }

    private void initad() {
        ActionBar actionBar = getSupportActionBar();
        //设置一个默认的照片
        actionBar.setDisplayHomeAsUpEnabled(true);
        toggle = new ActionBarDrawerToggle(this, draw, R.string.open, R.string.close);
        toggle.syncState();
        draw.addDrawerListener(toggle);
    }
}


``package bwie.com.yuekao1.fragment;


import android.os.Bundle;
import android.support.design.widget.TabLayout;
import android.support.v4.app.Fragment;
import android.support.v4.view.ViewPager;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

import java.util.ArrayList;
import java.util.List;

import bwie.com.yuekao1.R;
import bwie.com.yuekao1.adapter.TAdapter;


public class Fragment01 extends Fragment {

    private TabLayout tab;
    private ViewPager pager;
    private List<String> list;
    private List<Fragment> list_f;

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        // Inflate the layout for this fragment
        View view = inflater.inflate(R.layout.fragment01, container, false);
        initView(view);
        return view;
    }

    private void initView(View view) {
        tab = (TabLayout) view.findViewById(R.id.tab);
        pager = (ViewPager) view.findViewById(R.id.f_pager);
        list = new ArrayList<>();
        list_f = new ArrayList<>();
        list=new ArrayList<>();
        list_f=new ArrayList<>();
        list.add("android");
        list.add("ios");
        list.add("福利");
        list_f.add(new Fragment05());
        list_f.add(new Fragment03());
        list_f.add(new Fragment06());
        TAdapter tAdapter = new TAdapter(getChildFragmentManager(), list, list_f);
        tab.setTabMode(TabLayout.MODE_FIXED);
        tab.setupWithViewPager(pager);
        pager.setAdapter(tAdapter);
    }
}
`

```package bwie.com.yuekao1.adapter;

import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentPagerAdapter;
import android.support.v4.view.PagerAdapter;
import android.view.View;

import java.util.List;

public class TAdapter extends FragmentPagerAdapter {
    private List<String> list;
    private List<Fragment> list_f;

    public TAdapter(FragmentManager fm, List<String> list, List<Fragment> list_f) {
        super(fm);
        this.list = list;
        this.list_f = list_f;
    }

    @Override
    public int getCount() {
        return list_f.size();
    }

    @Override
    public Fragment getItem(int i) {
        return list_f.get(i);
    }

    @Nullable
    @Override
    public CharSequence getPageTitle(int position) {
        return list.get(position);
    }
}
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