android 调用系统相机录像并保存

1、在AndroidManifest.xml中添加如下代码

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

<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"/><uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS"    tools:ignore="ProtectedPermissions" />

<application

<provider    android:authorities="${applicationId}.provider"    android:name="android.support.v4.content.FileProvider"    android:exported="false"    android:grantUriPermissions="true">    <meta-data android:name="android.support.FILE_PROVIDER_PATHS"        android:resource="@xml/provider_paths">    </meta-data></provider>

 </application>
</manifest>

2、在res目录下新建一个xml文件夹，并且新建一个provider_paths的xml文件

<?xml version="1.0" encoding="utf-8"?>
<paths xmlns:android="http://schemas.android.com/apk/res/android">
    <external-path name="external_files" path="."/>
</paths>

3、主文件中打开相机

Intent intent=new Intent(MediaStore.ACTION_VIDEO_CAPTURE);try {

//fileUri=Uri.fromFile(createMediaFile());如果这样写会报错    fileUri= FileProvider.getUriForFile(CameraVideoActivity.this,getApplicationContext().getPackageName() + ".provider",createMediaFile());//这是正确的写法

} catch (IOException e) {    e.printStackTrace();}intent.putExtra(MediaStore.EXTRA_OUTPUT,fileUri);intent.putExtra(MediaStore.EXTRA_VIDEO_QUALITY,1);

startActivityForResult(intent,1);

4、创建并保存视频的方法

private File createMediaFile() throws IOException {    if(Utils.checkSDCardAvaliable()) {        if ((Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED))) {            // 选择自己的文件夹            String path = Environment.getExternalStorageDirectory().getPath() + "/myvideo/";            // Constants.video_url 是一个常量，代表存放视频的文件夹            File mediaStorageDir = new File(path);            if (!mediaStorageDir.exists()) {                if (!mediaStorageDir.mkdirs()) {                    Log.e("TAG", "文件夹创建失败");                    return null;                }            }

// 文件根据当前的毫秒数给自己命名            String timeStamp = String.valueOf(System.currentTimeMillis());            timeStamp = timeStamp.substring(7);            String imageFileName = "V" + timeStamp;            String suffix = ".mp4";            File mediaFile = new File(mediaStorageDir + File.separator + imageFileName + suffix);            return mediaFile;        }    }    return null;}}

5、重写onActivityResult方法

@Overrideprotected void onActivityResult(int requestCode, int resultCode, Intent data) {    if(requestCode==1)    {        if(resultCode==RESULT_OK)        {            Toast.makeText(this, "Video saved to:\n" +                    data.getData(), Toast.LENGTH_LONG).show();            vv_play.setVideoURI(fileUri);            vv_play.requestFocus();        }    }}

6、DDMS截图

原文地址：https://www.cnblogs.com/maoliyy/p/9284847.html