安全知识普及系统5

继续进行页面的编写，同时也完成了视频播放的功能

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:padding="20dp"
    >

    <TextView
        android:id="@+id/title_internet"
        android:text="网络安全教育视频"
        android:layout_width="match_parent"
        android:layout_height="100dp"
        android:gravity="center"
        android:textSize="30dp"
        />

    <VideoView
        android:id="@+id/vdinternet"
        android:layout_width="match_parent"
        android:layout_height="300dp"
        android:layout_below="@+id/title_internet" />

    <Button
        android:id="@+id/play_internet"
        android:layout_width="160dp"
        android:layout_height="80dp"
        android:layout_below="@+id/vdinternet"
        android:layout_marginTop="20dp"
        android:text="播放" />
    <Button
        android:id="@+id/stop_internet"
        android:layout_width="160dp"
        android:layout_height="80dp"
        android:text="终止播放"
        android:layout_below="@+id/vdinternet"
        android:layout_marginTop="20dp"
        android:layout_alignParentRight="true"
        />

</RelativeLayout>

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:padding="20dp"
    >

    <TextView
        android:id="@+id/title_xiaofang"
        android:text="消防安全教育视频"
        android:layout_width="match_parent"
        android:layout_height="100dp"
        android:gravity="center"
        android:textSize="30dp"
        />

    <VideoView
        android:id="@+id/vdxiaofang"
        android:layout_width="match_parent"
        android:layout_height="300dp"
        android:layout_below="@+id/title_xiaofang" />

    <Button
        android:id="@+id/play_xiaofang"
        android:layout_width="160dp"
        android:layout_height="80dp"
        android:layout_below="@+id/vdxiaofang"
        android:layout_marginTop="20dp"
        android:text="播放" />
    <Button
        android:id="@+id/stop_xiaofang"
        android:layout_width="160dp"
        android:layout_height="80dp"
        android:text="终止播放"
        android:layout_below="@+id/vdxiaofang"
        android:layout_marginTop="20dp"
        android:layout_alignParentRight="true"
        />

</RelativeLayout>

package com.example.myapplication.activity;

import androidx.appcompat.app.AppCompatActivity;

import android.net.Uri;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.MediaController;
import android.widget.VideoView;

import com.example.myapplication.R;

public class electActivity extends AppCompatActivity {
    private VideoView mVideoView;
    private Button playBtn, stopBtn;
    MediaController mMediaController;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_elect);
        mVideoView=findViewById(R.id.vdelect);
        mMediaController=new  MediaController(this);
        playBtn=findViewById(R.id.play_ele);
        stopBtn=findViewById(R.id.stop_ele);
        playBtn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                String url="android.resource://"+getPackageName()+"/"+R.raw.elect;
                mVideoView.setVideoURI(Uri.parse(url));
                mMediaController.setMediaPlayer(mVideoView);
                mVideoView.setMediaController(mMediaController);
                if (view.getId() == R.id.play_ele) {
                    mVideoView.start();
                } else if (view == stopBtn) {
                    mVideoView.stopPlayback();
                }

            }
        });
        stopBtn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                String url="android.resource://"+getPackageName()+"/"+R.raw.elect;
                mVideoView.setVideoURI(Uri.parse(url));
                mMediaController.setMediaPlayer(mVideoView);
                mVideoView.setMediaController(mMediaController);
                if (view.getId() == R.id.play_ele) {
                    mVideoView.start();
                } else if (view == stopBtn) {
                    mVideoView.stopPlayback();
                }
            }
        });
    }
}

public class internetActivity extends AppCompatActivity {
    private VideoView mVideoView;
    private Button playBtn, stopBtn;
    MediaController mMediaController;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_internet);
        mVideoView=findViewById(R.id.vdinternet);
        mMediaController=new  MediaController(this);
        playBtn=findViewById(R.id.play_internet);
        stopBtn=findViewById(R.id.stop_internet);
        playBtn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                String url="android.resource://"+getPackageName()+"/"+R.raw.internet;
                mVideoView.setVideoURI(Uri.parse(url));
                mMediaController.setMediaPlayer(mVideoView);
                mVideoView.setMediaController(mMediaController);
                if (view.getId() == R.id.play_internet) {
                    mVideoView.start();
                } else if (view == stopBtn) {
                    mVideoView.stopPlayback();
                }

            }
        });
        stopBtn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                String url="android.resource://"+getPackageName()+"/"+R.raw.internet;
                mVideoView.setVideoURI(Uri.parse(url));
                mMediaController.setMediaPlayer(mVideoView);
                mVideoView.setMediaController(mMediaController);
                if (view.getId() == R.id.play_ele) {
                    mVideoView.start();
                } else if (view == stopBtn) {
                    mVideoView.stopPlayback();
                }
            }
        });
    }
}

package com.example.myapplication.activity;

import androidx.appcompat.app.AppCompatActivity;

import android.net.Uri;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.MediaController;
import android.widget.VideoView;

import com.example.myapplication.R;

public class schoolActivity extends AppCompatActivity {
    private VideoView mVideoView;
    private Button playBtn, stopBtn;
    MediaController mMediaController;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_school);
        mVideoView=findViewById(R.id.vd_school);
        mMediaController=new  MediaController(this);
        playBtn=findViewById(R.id.play);
        stopBtn=findViewById(R.id.stop);
        playBtn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                String url="android.resource://"+getPackageName()+"/"+R.raw.school;
                mVideoView.setVideoURI(Uri.parse(url));
                mMediaController.setMediaPlayer(mVideoView);
                mVideoView.setMediaController(mMediaController);
                if (view.getId() == R.id.play) {
                    mVideoView.start();
                } else if (view == stopBtn) {
                    mVideoView.stopPlayback();
                }

            }
        });
        stopBtn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                String url="android.resource://"+getPackageName()+"/"+R.raw.school;
                mVideoView.setVideoURI(Uri.parse(url));
                mMediaController.setMediaPlayer(mVideoView);
                mVideoView.setMediaController(mMediaController);
                if (view.getId() == R.id.play) {
                    mVideoView.start();
                } else if (view == stopBtn) {
                    mVideoView.stopPlayback();
                }
            }
        });
    }
}

public class xiaofangActivity extends AppCompatActivity {
    private VideoView mVideoView;
    private Button playBtn, stopBtn;
    MediaController mMediaController;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_xiaofang);
        mVideoView=findViewById(R.id.vdxiaofang);
        mMediaController=new  MediaController(this);
        playBtn=findViewById(R.id.play_xiaofang);
        stopBtn=findViewById(R.id.stop_xiaofang);
        playBtn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                String url="android.resource://"+getPackageName()+"/"+R.raw.xiaofang;
                mVideoView.setVideoURI(Uri.parse(url));
                mMediaController.setMediaPlayer(mVideoView);
                mVideoView.setMediaController(mMediaController);
                if (view.getId() == R.id.play_xiaofang) {
                    mVideoView.start();
                } else if (view == stopBtn) {
                    mVideoView.stopPlayback();
                }

            }
        });
        stopBtn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                String url="android.resource://"+getPackageName()+"/"+R.raw.xiaofang;
                mVideoView.setVideoURI(Uri.parse(url));
                mMediaController.setMediaPlayer(mVideoView);
                mVideoView.setMediaController(mMediaController);
                if (view.getId() == R.id.play_xiaofang) {
                    mVideoView.start();
                } else if (view == stopBtn) {
                    mVideoView.stopPlayback();
                }
            }
        });
    }
}