云豹app直播源码Android 端获取相册图片功能的具体实现教程
发布来源：云豹科技
发布人：云豹科技
2021-04-16 10:06:07
app直播源码开发时，关于动态功能的实现，通常采用类似于朋友圈式图文＋视频模式，这就需要通过访问手机相册获取用户图片进行下一步操作，接下来就请跟随小编一起，从app直播源码角度探究云豹直播系统在这个功能上的具体实现方式。
1.如图1所示，当用户选择发布图片动态时，app页面上会弹出选择框，并将其他部分设定为深色不允许选中，用户可以选择拍照或本地相册获取图片两种方法选择图片
2.当选择本地图片时，将进入图2中的系统相册中进行图片选择，如果选择拍照则会进入相机拍照页面。
3.此外，云豹直播还自定义了图片选择器，如图3所示，将拍照和相册选择集中在一个页面，且支持多选。
部分app直播源码如下：
public class MediaUtil {
public static void getImageByCamera(final FragmentActivity activity, final boolean needCrop, final ImageResultCallback imageResultCallback) {
//请求拍照和存储的权限的回调
PermissionCallback permissionCallback = new PermissionCallback() {
@Override
public void onAllGranted() {
if (imageResultCallback != null) {
imageResultCallback.beforeCamera();
}
Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
final File cameraResult = getNewFile();
Uri uri = null;
if (Build.VERSION.SDK_INT >= 24) {
uri = FileProvider.getUriForFile(activity, FILE_PROVIDER, cameraResult);
intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION | Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
} else {
uri = Uri.fromFile(cameraResult);
}
final Uri finalURI = uri;
intent.putExtra(MediaStore.EXTRA_OUTPUT, uri);
//开始拍照
ActivityResultUtil.startActivityForResult(activity, intent, new ActivityResultCallback() {
@Override
public void onSuccess(Intent intent) {
if (needCrop) {//需要裁剪
if (finalURI != null) {
crop(activity, finalURI, imageResultCallback);
}
} else {
if (imageResultCallback != null) {
imageResultCallback.onSuccess(cameraResult);
}
}
}
@Override
public void onFailure() {
ToastUtil.show(R.string.img_camera_cancel);
}
});
}
};
//app直播源码请求拍照和存储的权限
PermissionUtil.request(
activity,
permissionCallback,
Manifest.permission.READ_EXTERNAL_STORAGE,
Manifest.permission.WRITE_EXTERNAL_STORAGE,
Manifest.permission.CAMERA
);
}
/**
* 拍照获取图片
*/
public static void getImageByCamera(FragmentActivity activity, ImageResultCallback imageResultCallback) {
getImageByCamera(activity, true, imageResultCallback);
}
/**
* 相册获取图片
*/
public static void getImageByAlumb(final FragmentActivity activity, final boolean needCrop, final ImageResultCallback imageResultCallback) {
//请求存储的权限的回调
PermissionCallback permissionCallback = new PermissionCallback() {
@Override
public void onAllGranted() {
Intent intent = new Intent();
intent.addCategory(Intent.CATEGORY_OPENABLE);
intent.setType("image/*");
if (Build.VERSION.SDK_INT < 19) {
intent.setAction(Intent.ACTION_GET_CONTENT);
} else {
intent.setAction(Intent.ACTION_OPEN_DOCUMENT);
}
ActivityResultUtil.startActivityForResult(activity, intent, new ActivityResultCallback() {
@Override
public void onSuccess(Intent intent) {
Uri dataUri = intent.getData();
if (dataUri != null) {
if (needCrop) {
crop(activity, dataUri, imageResultCallback);
} else {
if (imageResultCallback != null) {
String path = FileUtils.getPath(activity, dataUri);
if (!TextUtils.isEmpty(path)) {
imageResultCallback.onSuccess(new File(path));
}
}
}
}
}
@Override
public void onFailure() {
ToastUtil.show(R.string.img_alumb_cancel);
}
});
}
};
//请求存储的权限
PermissionUtil.request(
activity,
permissionCallback,
Manifest.permission.READ_EXTERNAL_STORAGE,
Manifest.permission.WRITE_EXTERNAL_STORAGE
);
}
public static void getImageByAlumb(FragmentActivity activity, ImageResultCallback imageResultCallback) {
getImageByAlumb(activity, true, imageResultCallback);
}
public static void startVideoRecord(final FragmentActivity activity, final VideoResultCallback videoResultCallback) {
PermissionCallback permissionCallback = new PermissionCallback() {
@Override
public void onAllGranted() {
Intent intent = new Intent(MediaStore.ACTION_VIDEO_CAPTURE);// 表示跳转至相机的录视频界面
final File videoResult = getNewVideoFile();
Uri uri = null;
if (Build.VERSION.SDK_INT >= 24) {
uri = FileProvider.getUriForFile(activity, FILE_PROVIDER, videoResult);
intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION | Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
} else {
uri = Uri.fromFile(videoResult);
}
intent.putExtra(MediaStore.EXTRA_OUTPUT, uri);
intent.putExtra(MediaStore.EXTRA_DURATION_LIMIT, 15);
//开始录制
ActivityResultUtil.startActivityForResult(activity, intent, new ActivityResultCallback() {
@Override
public void onSuccess(Intent intent) {
if (intent != null && intent.getData() != null && videoResultCallback != null) {
if (videoResult != null && videoResult.exists() && videoResult.length() > 0) {
String path = videoResult.getAbsolutePath();
long duration = 0;
MediaMetadataRetriever mmr = null;
try {
mmr = new MediaMetadataRetriever();
mmr.setDataSource(path);
String durationStr = mmr.extractMetadata(MediaMetadataRetriever.METADATA_KEY_DURATION);
if (!TextUtils.isEmpty(durationStr) && StringUtil.isInt(durationStr)) {
duration = Long.parseLong(durationStr);
}
} catch (Exception e) {
e.printStackTrace();
} finally {
if (mmr != null) {
mmr.release();
}
mmr = null;
}
saveVideoInfo(activity, path, duration);
videoResultCallback.onSuccess(videoResult, duration);
}
}
}
@Override
public void onFailure() {
ToastUtil.show(R.string.record_cancel);
}
});
}
};
PermissionUtil.request(
activity,
permissionCallback,
Manifest.permission.READ_EXTERNAL_STORAGE,
Manifest.permission.WRITE_EXTERNAL_STORAGE,
Manifest.permission.CAMERA,
Manifest.permission.RECORD_AUDIO
);
}
private static File getNewFile() {
// 裁剪头像的绝对路径
File dir = new File(CommonAppConfig.CAMERA_IMAGE_PATH);
if (!dir.exists()) {
dir.mkdirs();
}
return new File(dir, DateFormatUtil.getCurTimeString() + ".png");
}
private static void crop(FragmentActivity activity, Uri inputUri, final ImageResultCallback imageResultCallback) {
final File corpResult = getNewFile();
try {
Uri resultUri = Uri.fromFile(corpResult);
if (resultUri == null) {
return;
}
UCrop uCrop = UCrop.of(inputUri, resultUri)
.withAspectRatio(1, 1)
.withMaxResultSize(400, 400);
Intent intent = uCrop.getIntent(activity);
intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION | Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
ActivityResultUtil.startActivityForResult(activity, intent, new ActivityResultCallback() {
@Override
public void onSuccess(Intent intent) {
if (imageResultCallback != null) {
imageResultCallback.onSuccess(corpResult);
}
}
@Override
public void onFailure() {
ToastUtil.show(R.string.img_crop_cancel);
}
});
} catch (Exception e) {
try {
Uri resultUri = FileProvider.getUriForFile(activity, FILE_PROVIDER, corpResult);
if (resultUri == null) {
return;
}
UCrop uCrop = UCrop.of(inputUri, resultUri)
.withAspectRatio(1, 1)
.withMaxResultSize(400, 400);
Intent intent = uCrop.getIntent(activity);
intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION | Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
ActivityResultUtil.startActivityForResult(activity, intent, new ActivityResultCallback() {
@Override
public void onSuccess(Intent intent) {
if (imageResultCallback != null) {
imageResultCallback.onSuccess(corpResult);
}
}
@Override
public void onFailure() {
ToastUtil.show(R.string.img_crop_cancel);
}
});
} catch (Exception e1) {
e1.printStackTrace();
}
}
}
private static File getNewVideoFile() {
File dir = new File(CommonAppConfig.VIDEO_PATH_RECORD);
if (!dir.exists()) {
dir.mkdirs();
}
return new File(dir, DateFormatUtil.getCurTimeString() + ".mp4");
}
/**
* 把视频保存到ContentProvider,在选择上传的时候能找到
*/
public static void saveVideoInfo(Context context, String videoPath, long duration) {
try {
File videoFile = new File(videoPath);
String fileName = videoFile.getName();
long currentTimeMillis = System.currentTimeMillis();
ContentValues values = new ContentValues();
values.put(MediaStore.MediaColumns.TITLE, fileName);
values.put(MediaStore.MediaColumns.DISPLAY_NAME, fileName);
values.put(MediaStore.MediaColumns.DATE_MODIFIED, currentTimeMillis);
values.put(MediaStore.MediaColumns.DATE_ADDED, currentTimeMillis);
values.put(MediaStore.MediaColumns.DATA, videoPath);
values.put(MediaStore.MediaColumns.SIZE, videoFile.length());
values.put(MediaStore.Video.VideoColumns.DATE_TAKEN, currentTimeMillis);
values.put(MediaStore.MediaColumns.MIME_TYPE, "video/mp4");
values.put(MediaStore.Video.VideoColumns.DURATION, duration);
context.getContentResolver().insert(MediaStore.Video.Media.EXTERNAL_CONTENT_URI, values);
} catch (Exception e) {
e.printStackTrace();
}
}
}做完以上这些，就实现了app直播源码获取用户手机中相册图片的功能，如您想了解更多关于app直播源码的开发知识，欢迎联系云豹科技，会有专门的负责人为您讲解。
声明：以上内容为云豹科技作者本人原创，未经作者本人同意，禁止转载，否则将追究相关法律责任www.yunbaokj.com
声明:
以上内容为云豹科技作者本人原创，未经作者本人同意，禁止转载，否则将追究相关法律责任
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