Android——欢迎引导页

野性酷女 2021-07-25 14:18 463阅读 0赞

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMzNjA4MDAw_size_16_color_FFFFFF_t_70]

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QQ 1285575001  
Wechat M010527  
技术交流 QQ群599020441  
纪年科技aming

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#### 引导页和欢迎页面 增加用户体验 ####

引导页 第一次 安装该APP的时候显示  
欢迎页 每次进入应用 时候出现

功能  
逻辑方法

引导页是几张不同的图片，下面会有一个表示原点，指明当前是第几页。

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#### \#1准备图片素材，和底部原点。 ####

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMzNjA4MDAw_size_16_color_FFFFFF_t_70 1]

##### \#2新建两个类，GuideActivity，SplashActivity， #####

第一个类用于实现引导页，  
第二个用于判断APP是否为第一次进入，是就启动引导页，不是的话进入主页面  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMzNjA4MDAw_size_16_color_FFFFFF_t_70 2]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMzNjA4MDAw_size_16_color_FFFFFF_t_70 3]![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMzNjA4MDAw_size_16_color_FFFFFF_t_70 4]

package com.eduapp;
    
    import android.content.Intent;
    import android.os.Handler;
    import androidx.appcompat.app.AppCompatActivity;
    import android.os.Bundle;
    import android.view.View;
    import android.view.WindowManager;
    import android.widget.TextView;
    
    import java.util.Timer;
    import java.util.TimerTask; public class splashActivity extends AppCompatActivity implements View.OnClickListener{ 
    
        private  int time_back = 5;
        private TextView tv;
        Timer timer = new Timer();
        private  Handler handler;
        private  Runnable runnable; @Override protected void onCreate(Bundle savedInstanceState) { 
            super.onCreate(savedInstanceState);
            int flag = WindowManager.LayoutParams.FLAG_FULLSCREEN;
            getWindow().setFlags(flag,flag);
            setContentView(R.layout.activity_splash);
            initView();
            timer.schedule(task,1000,1000);
            handler = new Handler(); handler.postDelayed(runnable = new Runnable() { 
                @Override public void run() { 
                    Intent intent = new Intent(splashActivity.this,MainActivity.class);
                    startActivity(intent);
                    finish();
                }
            },5000);
        }
        private void initView(){ 
            tv = findViewById(R.id.textView2);
            tv.setOnClickListener(this);
        }
    
        TimerTask task = new TimerTask() { 
            @Override public void run() { 
                runOnUiThread(new Runnable() { 
                    @Override public void run() { 
                        time_back--;
                        tv.setText("跳过 "+time_back); if(time_back<0){ 
                            timer.cancel();
                            tv.setVisibility(View.GONE);
                        }
                    }
                });
            }
        }; @Override public void onClick(View view){ 
            switch (view.getId()){ 
                case  R.id.textView2:
                    Intent intent = new Intent(splashActivity.this,MainActivity.class);
                    startActivity(intent);
                    finish(); if(runnable != null){ 
                        handler.removeCallbacks(runnable);
                    }
                    break;
                    default:
                        break;
            }
        }
    }

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMzNjA4MDAw_size_16_color_FFFFFF_t_70 5]![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMzNjA4MDAw_size_16_color_FFFFFF_t_70 6]![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMzNjA4MDAw_size_16_color_FFFFFF_t_70 7]

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