android

dpi

dpi =√(horizontal²+vertical²)/diagonal  屏幕分辨率(px)  屏幕大小(英寸)

DisplayMetrics metrics = new DisplayMetrics();
getWindowManager().getDefaultDisplay().getMetrics(metrics);//获取屏幕尺寸信息
currnetDensity = (int)( metrics.density * 160 );//dpi

2017/11/10 01:07 明天继续看

ijkplayer  介绍http://blog.csdn.net/u010987039/article/details/52301077

分割线————————————————————————————————————————————————————

package com.example.jay.com.trtsp;

import android.content.Context;
import android.media.MediaPlayer;
import android.os.Bundle;
import android.os.SystemClock;
import android.provider.Settings;
import android.support.annotation.NonNull;
import android.support.annotation.StringDef;
import android.support.design.widget.BottomNavigationView;
import android.support.v7.app.AppCompatActivity;
import android.view.MenuItem;
import android.view.View;
import android.widget.LinearLayout;
import android.widget.TextView;
import android.widget.Button;
import android.widget.Toast;
import android.os.Handler;

import android.app.Activity;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.widget.MediaController;
import android.widget.VideoView;

import android.graphics.Bitmap;
import android.view.KeyEvent;
import android.view.ViewGroup;
import android.webkit.WebChromeClient;
import android.webkit.WebSettings;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.webkit.JavascriptInterface;
import android.view.ViewGroup.LayoutParams;
import android.util.DisplayMetrics;

import javax.xml.transform.ErrorListener;


public class MainActivity extends AppCompatActivity {

    private TextView mTextMessage;
    private VideoView videoView ;
    private Handler handler=null;
    private Context context;
    private Button btn;

    WebView mwebView;
    WebSettings mWebSettings;
    TextView beginLoading,endLoading,loading,mtitle;
    private BottomNavigationView.OnNavigationItemSelectedListener mOnNavigationItemSelectedListener
            = new BottomNavigationView.OnNavigationItemSelectedListener() {

        @Override
        public boolean onNavigationItemSelected(@NonNull MenuItem item) {
            switch (item.getItemId()) {
                case R.id.navigation_home:
                    mTextMessage.setText(R.string.title_home);
                    return true;
                case R.id.navigation_dashboard:
                    mTextMessage.setText(R.string.title_dashboard);
                    return true;
                case R.id.navigation_notifications:
                    mTextMessage.setText(R.string.title_notifications);
                    return true;
            }
            return false;
        }

    };

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


        mwebView = (WebView) findViewById(R.id.webView1);
        beginLoading = (TextView) findViewById(R.id.text_beginLoading);
        endLoading = (TextView) findViewById(R.id.text_endLoading);
        loading = (TextView) findViewById(R.id.text_Loading);
        mtitle = (TextView) findViewById(R.id.title);
        btn = (Button) findViewById(R.id.button);
        handler=new Handler();
        //初始化videobox隐藏
        final VideoView videoView = (VideoView)findViewById(R.id.videoView);
//        videoView.setlistener
        LinearLayout videoBox = (LinearLayout)findViewById(R.id.videoBox);
        LayoutParams videoBoxStyle = videoBox.getLayoutParams();
        LinearLayout webViewBox = (LinearLayout) findViewById(R.id.webViewBox);
        LayoutParams webViewBoxStyle = webViewBox.getLayoutParams();
        videoBox.setVisibility(View.GONE);
        webViewBox.setVisibility(View.VISIBLE);
//        videoBoxStyle.width=0;
//        videoBoxStyle.height=0;
//        加载video控制器
//        videoView.setMediaController(new MediaController(this));
        videoView.setOnInfoListener(new MediaPlayer.OnInfoListener() {
            @Override
            public boolean onInfo(MediaPlayer mp, int what, int extra) {
                System.out.println(what);
                System.out.println(extra);
                return true;
//                return false;
            }
        });

//        webview相关设置
        mWebSettings = mwebView.getSettings();
//        mwebView.getSettings().setLayoutAlgorithm(LayoutAlgorithm.NARROW_COLUMNS);
        mwebView.getSettings().setJavaScriptEnabled(true);

//        mwebView.getSettings().setRenderPriority(RenderPriority.HIGH);
        mwebView.getSettings().setCacheMode(WebSettings.LOAD_CACHE_ELSE_NETWORK);  //设置 缓存模式
        // 开启 DOM storage API 功能
        mwebView.getSettings().setDomStorageEnabled(true);
        //开启 database storage API 功能
        mwebView.getSettings().setDatabaseEnabled(true);
        //开启 Application Caches 功能
        mwebView.getSettings().setAppCacheEnabled(true);
        mwebView.getSettings().setBlockNetworkImage(false);
        mwebView.getSettings().setLoadsImagesAutomatically(true); //自动加载图片
        mwebView.getSettings().setAllowUniversalAccessFromFileURLs(true);//
//        mwebView.getSettings().setPluginState(PluginState.OFF);
//        获取屏幕相关信息
        DisplayMetrics metrics = new DisplayMetrics();
        getWindowManager().getDefaultDisplay().getMetrics(metrics);

//        webview导入需要显示的html文件
        mwebView.loadUrl("file:///android_asset/newdemo/index.html");
//        添加js接口
        mwebView.addJavascriptInterface(new StartVideo(), "jsInterface");
        //设置不用系统浏览器打开,直接显示在当前webView
        mwebView.setWebViewClient(new WebViewClient() {
            @Override
            public boolean shouldOverrideUrlLoading(WebView view, String url) {
                System.out.println("++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++");
                System.out.println(mwebView);
                view.loadUrl(url);

                return true;
            }
        });

        //设置WebChromeClient类
        mwebView.setWebChromeClient(new WebChromeClient() {
            //获取网站标题
            @Override
            public void onReceivedTitle(WebView view, String title) {
                System.out.println("标题在这里");
//                mtitle.setText(title);
            }
            //获取加载进度
            @Override
            public void onProgressChanged(WebView view, int newProgress) {
                System.out.println("这里是加载进度"+newProgress);
            }
        });
        //设置webViewClient类
        mwebView.setWebViewClient(new WebViewClient() {
            //设置加载前的函数
            @Override
            public void onPageStarted(WebView view, String url, Bitmap favicon) {
                System.out.println("开始加载了");
//                beginLoading.setText("开始加载了");
            }

            //设置结束加载函数
            @Override
            public void onPageFinished(WebView view, String url) {
//                endLoading.setText("结束加载了");
//                  addVideoListner();
            }
        });


    }

    //点击返回上一页面而不是退出浏览器
    @Override
    public boolean onKeyDown(int keyCode, KeyEvent event) {
        if (keyCode == KeyEvent.KEYCODE_BACK && mwebView.canGoBack()) {
            mwebView.goBack();
            return true;
        }

        return super.onKeyDown(keyCode, event);
    }

    //销毁webView
    @Override
    protected void onDestroy() {
        if (mwebView != null) {
            mwebView.loadDataWithBaseURL(null, "", "text/html", "utf-8", null);
            mwebView.clearHistory();

            ((ViewGroup) mwebView.getParent()).removeView(mwebView);
            mwebView.destroy();
            mwebView = null;
        }
        super.onDestroy();
    }

//    播放、停止视频功能
    private final class StartVideo {
        private Context context;
        @JavascriptInterface
        public void showToast(String text){
            Toast.makeText(getApplicationContext(), text, Toast.LENGTH_SHORT).show();
        }
        @JavascriptInterface
        public void showJsText(final String text){
            runOnUiThread(new Runnable() {
                @Override
                public void run() {
                    mwebView.loadUrl("javascript:jsText('"+text+"')");
                }
            });
        }
        @JavascriptInterface
        public void openVideo(String text) {
            final String thisText = text;

            handler.post(new Runnable() {
                @Override
                public void run() {
                    Button btn = (Button)findViewById(R.id.button);
//                    LayoutParams btnStyle = btn.getLayoutParams();
                    final VideoView videoView = (VideoView)findViewById(R.id.videoView);
                    videoView.setOnCompletionListener(new MediaPlayer.OnCompletionListener() {
                        @Override
                        public void onCompletion(MediaPlayer mp) {
                            videoView.start();
                        }
                    });
//                    LayoutParams videoStyle = videoView.getLayoutParams();
                    final LinearLayout videoBox = (LinearLayout)findViewById(R.id.videoBox);
                    final LayoutParams videoBoxStyle = videoBox.getLayoutParams();
                    final LinearLayout webViewBox = (LinearLayout) findViewById(R.id.webViewBox);
                    final LayoutParams webViewBoxStyle = webViewBox.getLayoutParams();
                    final DisplayMetrics metrics = new DisplayMetrics();
                    getWindowManager().getDefaultDisplay().getMetrics(metrics);
                    System.out.println("这里是获取的屏幕信息"+metrics);
                    //video展示，webview隐藏
//                    videoBoxStyle.width=(int)metrics.density*360;
//                    videoBoxStyle.height=(int)metrics.density*640;
//                    webViewBoxStyle.width=0;
//                    webViewBoxStyle.height=0;
                    webViewBox.setVisibility(View.GONE);
                    videoBox.setVisibility(View.VISIBLE);
//                    videoView.setOnErrorListener();
//                    videoView.setOnCompletionListener(new MediaPlayer.OnCompletionListener() {
//                        @Override
//                        public void onCompletion(MediaPlayer videoView) {
//
//                        }
//                    });

                    String url = thisText;
                    Uri uri = Uri.parse(url);
                    videoView.setVideoURI(uri);
                    videoView.requestFocus();
                    videoView.start();
//                    videoView.resume();
                    btn.setOnClickListener(new View.OnClickListener() {
                        @Override
                        public void onClick(View v) {
                            System.out.println("stop");

//                            videoBoxStyle.width=0;
//                            videoBoxStyle.height=0;
                            videoBox.setVisibility(View.GONE);
                            webViewBox.setVisibility(View.VISIBLE);
                            System.out.println(videoBox);
                            System.out.println(videoBoxStyle.width);
//                            webViewBoxStyle.width=(int)metrics.density*360;
//                            webViewBoxStyle.height=(int)metrics.density*640;
                            System.out.println(webViewBox);
                            System.out.println(webViewBoxStyle.width);
                            videoView.stopPlayback();

                        }
                    });

                    Toast.makeText(getApplicationContext(), thisText, Toast.LENGTH_SHORT).show();



//                    Toast.makeText(getApplicationContext(),, Toast.LENGTH_SHORT).show();
                    //        需要请求获取视频流地址

//        videoView.setVideoPath("rtsp://184.72.239.149/vod/mp4://BigBuckBunny_175k.mov");
//                        dp px的转换
//                    videoStyle.width=(int)metrics.density*314;
//                    videoStyle.height=(int)metrics.density*176;
//                    btnStyle.width=(int)metrics.density*123;
//                    btnStyle.height =(int)metrics.density*67;

//        videoView.setMediaController(new MediaController(this.));
//                    videoView.setVisibility(View.VISIBLE);
//                    webViewStyle.width=0;
//                    webViewStyle.height=0;
//                    webView.setVisibility(View.INVISIBLE);


                }
            });

        }
        @JavascriptInterface
        public  void stopVideo(){
            handler.post(new Runnable() {
                @Override
                public void run() {
                    LinearLayout videoBox = (LinearLayout)findViewById(R.id.videoBox);
                    LayoutParams videoBoxStyle = videoBox.getLayoutParams();
                    LinearLayout webViewBox = (LinearLayout) findViewById(R.id.webViewBox);
                    LayoutParams webViewBoxStyle = videoBox.getLayoutParams();
                    DisplayMetrics metrics = new DisplayMetrics();
                    getWindowManager().getDefaultDisplay().getMetrics(metrics);
                    videoView.stopPlayback();
                    videoBoxStyle.width=0;
                    videoBoxStyle.width=0;
//                    videoView.setVisibility(View.INVISIBLE);
                    webViewBoxStyle.width=(int)metrics.density*360;
                    webViewBoxStyle.height=(int)metrics.density*640;
                }
            });
        }

    }
//    private int convertDpToPixel(int dp) {
//        DisplayMetrics displayMetrics = this.context.getResources().getDisplayMetrics();
//        return (int)(dp*displayMetrics.density);
//    }
//
//    private int convertPixelToDp(int pixel) {
//        DisplayMetrics displayMetrics = this.context.getResources().getDisplayMetrics();
//        return (int)(pixel/displayMetrics.density);
//    }
}

 http://blog.csdn.net/xipiaoyouzi/article/details/75315836?locationNum=4&fps=1

android vlc