[移动开发]Android 页面倒计时跳转 微博启动页为例

首先创建项目

然后在右键再创一个empty avtivity

xml布局中的图片自己去找然后复制进去，可复制进drawable中

activity_sp.xml的代码

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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"
    android:background="@drawable/bcg">

    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content">

        <TextView
            android:id="@+id/tv"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_alignParentRight="true"
            android:layout_marginRight="20dp"
            android:layout_marginTop="10dp"
            android:textSize="20sp" />
    </RelativeLayout>

</LinearLayout>

SpActivity的代码

package com.cwj.test;

import android.annotation.SuppressLint;
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 SpActivity extends AppCompatActivity implements View.OnClickListener {

    private int recLen = 5;//跳过倒计时提示5秒
    private TextView tv;
    Timer timer = new Timer();
    private Handler handler;
    private Runnable runnable;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        //定义全屏参数
        int flag= WindowManager.LayoutParams.FLAG_FULLSCREEN;
        //设置当前窗体为全屏显示
        getWindow().setFlags(flag, flag);
        setContentView(R.layout.activity_sp);
        initView();
        timer.schedule(task, 1000, 1000);//等待时间一秒，停顿时间一秒
        handler = new Handler();
        handler.postDelayed(runnable =new Runnable() {
            @Override
            public void run() {
                //从闪屏界面跳转到首界面
                Intent intent = new Intent(SpActivity.this, MainActivity.class);
                startActivity(intent);
                finish();
            }
        }, 5000);//延迟5S后发送handler信息

    }

    private void initView() {
        tv = findViewById(R.id.tv);//跳过
        tv.setOnClickListener(this);//跳过监听
    }

    TimerTask task = new TimerTask() {
        @Override
        public void run() {
            runOnUiThread(new Runnable() { // UI thread
                @SuppressLint("SetTextI18n")
                @Override
                public void run() {
                    recLen--;
                    tv.setText("跳过 " + recLen);
                    if (recLen < 0) {
                        timer.cancel();
                        tv.setVisibility(View.GONE);//倒计时到0隐藏字体
                    }
                }
            });
        }
    };

    /**
     * 点击跳过
     */
    @Override
    public void onClick(View view) {
        if (view.getId() == R.id.tv) {//从闪屏界面跳转到首界面
            Intent intent = new Intent(SpActivity.this, MainActivity.class);
            startActivity(intent);
            finish();
            if (runnable != null) {
                handler.removeCallbacks(runnable);
            }
        }
    }
}

修改一下标题的样式，改parent=“Theme.AppCompat.Light.NoActionBar”
就可以了，其他不影响

接下来在AndroidManifest.xml修改
图标这里修改一下，加入你的图片，微博图标图片，label也改一下

重点来了！！改一下这个activity，从sbactivity开始intent

完整代码！！AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    package="com.cwj.test">

    <application
        android:allowBackup="true"
        android:icon="@mipmap/bcdd"
        android:label="微博"
        android:roundIcon="@mipmap/bcdd"
        android:supportsRtl="true"
        android:theme="@style/Theme.Test"
        tools:ignore="ExtraText">
        <activity
            android:name=".MainActivity"
            android:exported="false"
        />

        <activity
            android:name=".SpActivity"
            android:exported="true">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>
好了！！加油，学无止境，苦海无涯，不要放弃，坚持就是胜利！！