```
当你选择成为别人时，你将失去你自己。——《纳尼亚传奇3》
```
使用图像异步加载库 universalimageloader：
一、介绍
Android-Universal-Image-Loader是一个开源的UI组件程序，该项目的目的是提供一个可重复使用的仪器为异步图像加载，缓存和显示。所以，如果你的程序里需要这个功能的话，那么不妨试试它。因为已经封装好了一些类和方法。我们 可以直接拿来用了。而不用重复去写了。其实，写一个这方面的程序还是比较麻烦的，要考虑多线程，缓存，内存溢出等很多方面。但是，你也可以参考这个例子来自己写出更好的程序。在此为大家介绍一下。效果图如下：
1.jpg
1、使用
1.1 在project的build.gradle添加如下代码和引入lib库
android {
compileSdkVersion 29
buildToolsVersion "29.0.2"
defaultConfig {
applicationId "com.ocwvar.video_svg"
minSdkVersion 19
targetSdkVersion 29
versionCode 1
versionName "1.0"
testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
}
}
//依赖（图像异步加载）
implementation 'com.nostra13.universalimageloader:universal-image-loader:1.9.4'
1.2 运行所需权限
<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
1.3 布局文件
<?xml version="1.0" encoding="utf-8"?>
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<fm.jiecao.jcvideoplayer_lib.JCVideoPlayer
android:id="@+id/jcvideoplayer"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</LinearLayout>
1.4 配置清单文件
<?xml version="1.0" encoding="utf-8"?>
package="com.ocwvar.video_svg">
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:roundIcon="@mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="@style/AppTheme">
<activity android:name=".MainActivity"
android:configChanges="orientation"
android:screenOrientation="portrait">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name=".ListActivity"
android:screenOrientation="portrait" />
<activity
android:name=".ListViewpagerActivity"
android:screenOrientation="portrait" />
<activity
android:name=".SetSkinActivity"
android:screenOrientation="portrait" />
</application>
</manifest>
1.5 activity 中调运
一行代码调用，大部分需求都能实现，
public class MainActivity extends AppCompatActivity implements View.OnClickListener {
JCVideoPlayer videoController1, videoController2, videoController3;
Button btnToList, btnToListViewpager, btnToFullscreen, btnToChangecolor;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
/**
* 如果没有埋点需求，可以不用注册eventbus
* <br>
* if you do not want to get Buried Point , you do not need regist eventbus here
*/
EventBus.getDefault().register(this);
videoController1 = (JCVideoPlayer) findViewById(R.id.videocontroller1);
"简单代码实现视频播放");
videoController2 = (JCVideoPlayer) findViewById(R.id.videocontroller2);
"简单代码实现视频播放", false);
videoController3 = (JCVideoPlayer) findViewById(R.id.videocontroller3);
videoController3.setUp("http://121.40.64.47/resource/mp3/music_yangguang3.mp3",//
"简单代码实现视频播放");
btnToList = (Button) findViewById(R.id.to_list_activity);
btnToListViewpager = (Button) findViewById(R.id.to_list_viewpager_activity);
btnToFullscreen = (Button) findViewById(R.id.to_fullscreen);
btnToChangecolor = (Button) findViewById(R.id.to_changecolor_activity);
btnToList.setOnClickListener(this);
btnToListViewpager.setOnClickListener(this);
btnToFullscreen.setOnClickListener(this);
btnToChangecolor.setOnClickListener(this);
}
@Override
protected void onPause() {
super.onPause();
JCVideoPlayer.releaseAllVideos();
}
public void onEventMainThread(VideoEvents event) {
if (event.type == VideoEvents.POINT_START_ICON) {
Log.i("Video Event", "POINT_START_ICON" + " title is : " + event.obj + " url is : " + event.obj1);
} else if (event.type == VideoEvents.POINT_START_THUMB) {
Log.i("Video Event", "POINT_START_THUMB" + " title is : " + event.obj + " url is : " + event.obj1);
} else if (event.type == VideoEvents.POINT_STOP) {
Log.i("Video Event", "POINT_STOP" + " title is : " + event.obj + " url is : " + event.obj1);
} else if (event.type == VideoEvents.POINT_STOP_FULLSCREEN) {
Log.i("Video Event", "POINT_STOP_FULLSCREEN" + " title is : " + event.obj + " url is : " + event.obj1);
} else if (event.type == VideoEvents.POINT_RESUME) {
Log.i("Video Event", "POINT_RESUME" + " title is : " + event.obj + " url is : " + event.obj1);
} else if (event.type == VideoEvents.POINT_RESUME_FULLSCREEN) {
Log.i("Video Event", "POINT_RESUME_FULLSCREEN" + " title is : " + event.obj + " url is : " + event.obj1);
} else if (event.type == VideoEvents.POINT_CLICK_BLANK) {
Log.i("Video Event", "POINT_CLICK_BLANK" + " title is : " + event.obj + " url is : " + event.obj1);
} else if (event.type == VideoEvents.POINT_CLICK_BLANK_FULLSCREEN) {
Log.i("Video Event", "POINT_CLICK_BLANK_FULLSCREEN" + " title is : " + event.obj + " url is : " + event.obj1);
} else if (event.type == VideoEvents.POINT_CLICK_SEEKBAR) {
Log.i("Video Event", "POINT_CLICK_SEEKBAR" + " title is : " + event.obj + " url is : " + event.obj1);
} else if (event.type == VideoEvents.POINT_CLICK_SEEKBAR_FULLSCREEN) {
Log.i("Video Event", "POINT_CLICK_SEEKBAR_FULLSCREEN" + " title is : " + event.obj + " url is : " + event.obj1);
} else if (event.type == VideoEvents.POINT_AUTO_COMPLETE) {
Log.i("Video Event", "POINT_AUTO_COMPLETE" + " title is : " + event.obj + " url is : " + event.obj1);
} else if (event.type == VideoEvents.POINT_AUTO_COMPLETE_FULLSCREEN) {
Log.i("Video Event", "POINT_AUTO_COMPLETE_FULLSCREEN" + " title is : " + event.obj + " url is : " + event.obj1);
} else if (event.type == VideoEvents.POINT_ENTER_FULLSCREEN) {
Log.i("Video Event", "POINT_ENTER_FULLSCREEN" + " title is : " + event.obj + " url is : " + event.obj1);
} else if (event.type == VideoEvents.POINT_QUIT_FULLSCREEN) {
Log.i("Video Event", "POINT_QUIT_FULLSCREEN" + " title is : " + event.obj + " url is : " + event.obj1);
}
}
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.to_list_activity:
startActivity(new Intent(MainActivity.this, ListActivity.class));
break;
case R.id.to_list_viewpager_activity:
startActivity(new Intent(MainActivity.this, ListViewpagerActivity.class));
break;
case R.id.to_fullscreen://进入全屏播放
JCVideoPlayer.toFullscreenActivity(this,
"简单代码实现视频播放");
break;
case R.id.to_changecolor_activity:
startActivity(new Intent(this, SetSkinActivity.class));
break;
}
}
@Override
protected void onDestroy() {
super.onDestroy();
EventBus.getDefault().unregister(this);
}
}
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