android:id="@+id/edit_text"
android:layout_width=“0dp”
android:layout_height=“match_parent”
android:layout_weight=“1” />
<Button
android:id="@+id/send"
android:layout_width=“wrap_content”
android:layout_height=“match_parent”
android:text=“Send” />
(1)首先播放视频的话这里用到的是VideoView，使用起来也非常简单，先要设置一个视频文件的路径：String uri = “android.resource://” + getPackageName() + “/” + R.raw.danmu;然后调用start方法即可播放视频了。
(2)关于弹幕库的使用，可参考下面代码进行理解。我们需要创建一个DanmakuContext的实例和一个弹幕的解析器（这里直接创建了一个全局的BaseDanmakuParser），创建完成后就可以调用DanmakuView的prepare()方法了，调用这一方法后会自动调用回调函数中的prepared()方法，这个方法中调用了start方法，弹幕就此开始工作了。
package com.mythmayor.a1805danmudemo;
import android.app.Activity;
import android.graphics.Color;
import android.os.Build;
import android.os.Bundle;
import android.text.TextUtils;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.LinearLayout;
import android.widget.VideoView;
import java.util.Random;
import master.flame.danmaku.controller.DrawHandler;
import master.flame.danmaku.danmaku.model.BaseDanmaku;
import master.flame.danmaku.danmaku.model.DanmakuTimer;
import master.flame.danmaku.danmaku.model.IDanmakus;
import master.flame.danmaku.danmaku.model.android.DanmakuContext;
import master.flame.danmaku.danmaku.model.android.Danmakus;
import master.flame.danmaku.danmaku.parser.BaseDanmakuParser;
import master.flame.danmaku.ui.widget.DanmakuView;
public class MainActivity extends Activity {
private boolean showDanmaku;
private DanmakuView danmakuView;
private DanmakuContext danmakuContext;
private BaseDanmakuParser parser = new BaseDanmakuParser() {
@Override
protected IDanmakus parse() {
return new Danmakus();
}
};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
VideoView videoview = (VideoView) findViewById(R.id.video_view);
String uri = “android.resource://” + getPackageName() + “/” + R.raw.danmu;
videoview.setVideoPath(uri);
//videoview.setVideoURI(Uri.parse(uri));
videoview.start();
danmakuView = (DanmakuView) findViewById(R.id.danmaku_view);
danmakuView.enableDanmakuDrawingCache(true);
danmakuView.setCallback(new DrawHandler.Callback() {
@Override
public void prepared() {
showDanmaku = true;
danmakuView.start();
generateSomeDanmaku();
}
@Override
public void updateTimer(DanmakuTimer timer) {
}
@Override
public void danmakuShown(BaseDanmaku danmaku) {
}
@Override
public void drawingFinished() {
}
});
danmakuContext = DanmakuContext.create();
danmakuView.prepare(parser, danmakuContext);
final LinearLayout operationLayout = (LinearLayout) findViewById(R.id.operation_layout);
Button send = (Button) findViewById(R.id.send);
final EditText editText = (EditText) findViewById(R.id.edit_text);
danmakuView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if (operationLayout.getVisibility() == View.GONE) {
operationLayout.setVisibility(View.VISIBLE);
} else {
operationLayout.setVisibility(View.GONE);
}
}
});
send.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
String content = editText.getText().toString();
if (!TextUtils.isEmpty(content)) {
addDanmaku(content, true, Color.GREEN);
editText.setText("");
}
}
});
getWindow().getDecorView().setOnSystemUiVisibilityChangeListener(new View.OnSystemUiVisibilityChangeListener() {
@Override
public void onSystemUiVisibilityChange(int visibility) {
if (visibility == View.SYSTEM_UI_FLAG_VISIBLE) {
onWindowFocusChanged(true);
}
}
});
}
/**
-
向弹幕View中添加一条弹幕
-
@param content 弹幕的具体内容
-
@param withBorder 弹幕是否有边框
*/
private void addDanmaku(String content, boolean withBorder) {
BaseDanmaku danmaku = danmakuContext.mDanmakuFactory.createDanmaku(BaseDanmaku.TYPE_SCROLL_RL);
danmaku.text = content;
danmaku.padding = 5;
danmaku.textSize = sp2px(20);
danmaku.textColor = Color.WHITE;
danmaku.setTime(danmakuView.getCurrentTime());
if (withBorder) {
danmaku.borderColor = Color.GREEN;
}
danmakuView.addDanmaku(danmaku);
}
/**
-
弹幕View中添加一条弹幕
-
@param content 弹幕的具体内容
-
@param withBorder 弹幕是否有边框
-
@param textColor 弹幕字体颜色
*/
private void addDanmaku(String content, boolean withBorder, int textColor) {
BaseDanmaku danmaku = danmakuContext.mDanmakuFactory.createDanmaku(BaseDanmaku.TYPE_SCROLL_RL);
danmaku.text = content;
danmaku.padding = 5;
danmaku.textSize = sp2px(20);
danmaku.textColor = textColor;
danmaku.setTime(danmakuView.getCurrentTime());
if (withBorder) {
danmaku.borderColor = Color.GREEN;
}
danmakuView.addDanmaku(danmaku);
}
/**
- 随机生成一些弹幕内容以供测试
*/
private void generateSomeDanmaku() {
new Thread(new Runnable() {
@Override
public void run() {
while (showDanmaku) {
int time = new Random().nextInt(300);
String content = “” + time + time;
addDanmaku(content, false);
try {
Thread.sleep(time);
} catch (Exception e) {
e.printStackTrace();
}
}
}
}).start();
}
/**
- sp转px的方法。
*/
public int sp2px(float spValue) {
final float fontScale = getResources().getDisplayMetrics().scaledDensity;
return (int) (spValue * fontScale + 0.5f);
}
@Override
protected void onPause() {
super.onPause();
if (danmakuView != null && danmakuView.isPrepared()) {
danmakuView.pause();
}
}
@Override
protected void onResume() {
super.onResume();
if (danmakuView != null && danmakuView.isPrepared() && danmakuView.isPaused()) {
danmakuView.resume();
}
}
@Override
protected void onDestroy() {
super.onDestroy();
showDanmaku = false;
if (danmakuView != null) {
danmakuView.release();
danmakuView = null;
}
}
/**
- 沉浸式状态栏效果
*/
@Override
public void onWindowFocusChanged(boolean hasFocus) {
super.onWindowFocusChanged(hasFocus);
if (hasFocus && Build.VERSION.SDK_INT >= 19) {
View decorView = getWindow().getDecorView();
decorView.setSystemUiVisibility(View.SYSTEM_UI_FLAG_LAYOUT_STABLE
| View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION
| View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
| View.SYSTEM_UI_FLAG_HIDE_NAVIGATION
| View.SYSTEM_UI_FLAG_FULLSCREEN
| View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY);
}
}
}
使用一个相对布局，弹幕浮于视频之上，底部是弹幕文字输入栏，右下角为弹幕发送按钮视频弹幕的。
1.关于弹幕库的使用，需要创建一个DanmakuContext的实例和一个弹幕的解析器（这里直接创建了一个全局的BaseDanmakuParser），创建完成后就可以调用DanmakuView的prepare()方法了，调用这一方法后会自动调用回调函数中的prepared()方法，在这个方法中调用了start方法，弹幕就此开始工作了；
2.需要在onPause()、onResume()、onDestroy()方法中执行一些操作，以保证DanmakuView的资源可以得到释放。
代码：
package com.mythmayor.a1805danmudemo;
import android.content.Context;
import android.graphics.Color;
import android.os.Build;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.text.TextUtils;
import android.util.Log;
import android.view.View;
import android.view.inputmethod.InputMethodManager;
import android.widget.Button;
import android.widget.EditText;
import android.widget.LinearLayout;
import android.widget.VideoView;
import java.util.Random;
import master.flame.danmaku.controller.DrawHandler;
import master.flame.danmaku.danmaku.model.BaseDanmaku;
import master.flame.danmaku.danmaku.model.DanmakuTimer;
import master.flame.danmaku.danmaku.model.IDanmakus;
import master.flame.danmaku.danmaku.model.android.DanmakuContext;
import master.flame.danmaku.danmaku.model.android.Danmakus;
import master.flame.danmaku.danmaku.parser.BaseDanmakuParser;
import master.flame.danmaku.ui.widget.DanmakuView;
public class MainActivity extends AppCompatActivity {
private boolean showDanma;
private VideoView mVideoView;
private DanmakuView mDanmu;
private BaseDanmakuParser mBaseDanmakuParser = new BaseDanmakuParser() {//弹幕解析器
@Override
protected IDanmakus parse() {
return new Danmakus();
}
};
private DanmakuContext danmakuContext;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
init();
setOnListener();
}
/***
- 一些初始化工作
*/
private void init() {
String uri = “android.resource://” + getPackageName() + “/” + R.raw.danmu;
mVideoView = (VideoView)findViewById(R.id.video_view);
mVideoView.setVideoPath(uri);
mVideoView.start();
mDanmu = (DanmakuView)findViewById(R.id.danmu);
mDanmu.enableDanmakuDrawingCache(true);
danmakuContext = DanmakuContext.create();
danmakuContext.setScaleTextSize(1.1f);
mDanmu.prepare(mBaseDanmakuParser,danmakuContext);
}
/***
- 弹幕的准备工作，发送按钮监听。。
*/
private void setOnListener(){
mDanmu.setCallback(new DrawHandler.Callback() {
@Override
public void prepared() {
showDanma = true;
mDanmu.start();//启动弹幕
generateSomeDanmu();
}
@Override
public void updateTimer(DanmakuTimer timer) {
}
@Override
public void danmakuShown(BaseDanmaku danmaku) {
}
@Override
public void drawingFinished() {
}
});
final LinearLayout operate_view = (LinearLayout)findViewById(R.id.operate_layout);
Button send = (Button)findViewById(R.id.send);
final EditText editText = (EditText)findViewById(R.id.edit);
mDanmu.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
if (operate_view.getVisibility() == View.GONE){
operate_view.setVisibility(View.VISIBLE);
}else{
operate_view.setVisibility(View.GONE);
}
}
});
send.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
String content = editText.getText().toString();
if (!TextUtils.isEmpty(content)){
InputMethodManager imm = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
imm.hideSoftInputFromWindow(editText.getWindowToken(),0);
addDamu(content,true);
editText.setText("");
operate_view.setVisibility(View.GONE);
}
}
});
getWindow().getDecorView().setOnSystemUiVisibilityChangeListener(new View.OnSystemUiVisibilityChangeListener() {
@Override
public void onSystemUiVisibilityChange(int visibility) {
if (visibility == View.SYSTEM_UI_FLAG_VISIBLE){
onWindowFocusChanged(true);
}
}
});
}
/***
- 随机产生一些弹幕
*/
private void
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generateSomeDanmu() {
new Thread(new Runnable() {
@Override
public void run() {
while (showDanma){
int time = new Random().nextInt(300);
String content = “” + time;
addDamu(content,false);
try {
Thread.sleep(time);
}catch (Exception e){
e.printStackTrace();
}
}
}
}).start();
}
/***
-
添加弹幕的方法
-
@param content 弹幕的内容
-
@param isSelf 是否是用户发送的弹幕
*/