1.MainActivity类
public class MainActivity extends AppCompatActivity {
private ImageView imageView;
private Button button;
private static final String IMAGE_FILE_NAME = "faceImage1.png";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
imageView = (ImageView) findViewById(R.id.img);
button = (Button) findViewById(R.id.button);
button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
new AlertDialog.Builder(MainActivity.this)
.setItems(new String[]{"拍照", "相册"}, new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
switch (which) {
case 0:
Util.takePhoto(MainActivity.this, IMAGE_FILE_NAME);
break;
case 1:
Util.checkImageInAlbum(MainActivity.this);
break;
}
}
})
.setNegativeButton("取消", null)
.show();
}
});
}
//相机和相册照片后的回调
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (resultCode != RESULT_OK) return;
switch (requestCode) {
case Util.IMAGE_REQUEST_CODE:
if (data != null) {
Util.startPhotoZoom(MainActivity.this, data.getData());
}
break;
case Util.CAMERA_REQUEST_CODE:
if (Util.hasSdcard()) {
File tempFile = new File(WebUtil.filecache + IMAGE_FILE_NAME);
Util.startPhotoZoom(MainActivity.this, Uri.fromFile(tempFile));
} else {
ToastUtil.show(this, "未找到存储卡，无法存储照片！");
}
break;
case Util.RESULT_REQUEST_CODE:
if (data != null) {
getImageToView(data);
}
break;
}
}
private void getImageToView(Intent data) {//此处我只是简单的展示出来，可以把回调过来的data作为fali上传，（根据不同网络框架自己去上传吧）
Bundle bundle = data.getExtras();
Bitmap bitmap = (Bitmap) bundle.get("data");
imageView.setImageBitmap(bitmap);
}
}
import java.io.File;
/**
* Created by Administrator on 2017/5/24.
*/
public class Util {
public static final int CAMERA_REQUEST_CODE = 1;
public static final int IMAGE_REQUEST_CODE = 0;
public static final int RESULT_REQUEST_CODE = 2;
//拍照
public static void takePhoto(Activity activity, String IMAGE_FILE_NAME) {
Intent intentFromCapture = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
// 判断存储卡是否可以用，可用进行存储
if (hasSdcard()) {
intentFromCapture.putExtra(MediaStore.EXTRA_OUTPUT,
Uri.fromFile(new File(WebUtil.filecache, IMAGE_FILE_NAME)));
}
activity.startActivityForResult(intentFromCapture, CAMERA_REQUEST_CODE);
}
// 从相册中选择
public static void checkImageInAlbum(Activity activity) {
Intent intentFromGallery = new Intent();
if (Build.VERSION.SDK_INT < 19) {
intentFromGallery = new Intent(Intent.ACTION_GET_CONTENT);
intentFromGallery.setType("image/*");
} else {
intentFromGallery = new Intent(Intent.ACTION_PICK,
android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
}
activity.startActivityForResult(intentFromGallery, IMAGE_REQUEST_CODE);
}
public static boolean hasSdcard() {
String state = Environment.getExternalStorageState();
return state.equals(Environment.MEDIA_MOUNTED);
}
/**
* 裁剪图片方法实现
*
* @param uri
*/
public static void startPhotoZoom(Activity activity, Uri uri) {
try {
Intent intent = new Intent("com.android.camera.action.CROP");
if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.KITKAT) {
String url = getPath(activity, uri);
intent.setDataAndType(Uri.fromFile(new File(url)), "image/*");
} else {
intent.setDataAndType(uri, "image/*");
}
// intent.setDataAndType(uri, "image/*");
// 设置裁剪
intent.putExtra("crop", "true");
// aspectX aspectY 是宽高的比例
intent.putExtra("aspectX", 1);
intent.putExtra("aspectY", 1);
// outputX outputY 是裁剪图片宽高
intent.putExtra("outputX", 300);
intent.putExtra("outputY", 300);
intent.putExtra("return-data", true);
activity.startActivityForResult(intent, Util.RESULT_REQUEST_CODE);
} catch (Exception e) {
ToastUtil.show(activity, "图片裁剪失败，无法上传图片！");
// ToastUtil.show(UserInfoActivity.this, "图片裁剪失败，无法上传图片！");
}
}
/**
* 不同系统版本获取图片地址的方式不一样
**/
@SuppressLint("NewApi")
public static String getPath(final Context context, final Uri uri) {
final boolean isKitKat = Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT;
// DocumentProvider
if (isKitKat && DocumentsContract.isDocumentUri(context, uri)) {
// ExternalStorageProvider
if (isExternalStorageDocument(uri)) {
final String docId = DocumentsContract.getDocumentId(uri);
final String[] split = docId.split(":");
final String type = split[0];
if ("primary".equalsIgnoreCase(type)) {
return Environment.getExternalStorageDirectory() + "/" + split[1];
}
}
// DownloadsProvider
else if (isDownloadsDocument(uri)) {
final String id = DocumentsContract.getDocumentId(uri);
final Uri contentUri = ContentUris.withAppendedId(Uri.parse("content://downloads/public_downloads"),
Long.valueOf(id));
return getDataColumn(context, contentUri, null, null);
}// MediaProvider
else if (isMediaDocument(uri)) {
final String docId = DocumentsContract.getDocumentId(uri);
final String[] split = docId.split(":");
final String type = split[0];
Uri contentUri = null;
if ("image".equals(type)) {
contentUri = MediaStore.Images.Media.EXTERNAL_CONTENT_URI;
} else if ("video".equals(type)) {
contentUri = MediaStore.Video.Media.EXTERNAL_CONTENT_URI;
} else if ("audio".equals(type)) {
contentUri = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;
}
final String selection = "_id=?";
final String[] selectionArgs = new String[]{split[1]};
return getDataColumn(context, contentUri, selection, selectionArgs);
}
}
// MediaStore (and general)
else if ("content".equalsIgnoreCase(uri.getScheme())) {
// Return the remote address
if (isGooglePhotosUri(uri))
return uri.getLastPathSegment();
return getDataColumn(context, uri, null, null);
}
// File
else if ("file".equalsIgnoreCase(uri.getScheme())) {
return uri.getPath();
}
return null;
}
/**
* @param uri The Uri to check.
* @return Whether the Uri authority is ExternalStorageProvider.
*/
public static boolean isExternalStorageDocument(Uri uri) {
return "com.android.externalstorage.documents".equals(uri.getAuthority());
}
/**
* @param uri The Uri to check.
* @return Whether the Uri authority is DownloadsProvider.
*/
public static boolean isDownloadsDocument(Uri uri) {
return "com.android.providers.downloads.documents".equals(uri.getAuthority());
}
/**
* @param uri The Uri to check.
* @return Whether the Uri authority is MediaProvider.
*/
public static boolean isMediaDocument(Uri uri) {
return "com.android.providers.media.documents".equals(uri.getAuthority());
}
/**
* @param uri The Uri to check.
* @return Whether the Uri authority is Google Photos.
*/
public static boolean isGooglePhotosUri(Uri uri) {
return "com.google.android.apps.photos.content".equals(uri.getAuthority());
}
public static String getDataColumn(Context context, Uri uri, String selection, String[] selectionArgs) {
Cursor cursor = null;
final String column = "_data";
final String[] projection = {column};
try {
cursor = context.getContentResolver().query(uri, projection, selection, selectionArgs, null);
if (cursor != null && cursor.moveToFirst()) {
final int index = cursor.getColumnIndexOrThrow(column);
return cursor.getString(index);
}
} finally {
if (cursor != null)
cursor.close();
}
return null;
}
}
3.ToastUtil类
public class ToastUtil {
private static Toast toast;
public static void show(Context context, String info) {
if (toast == null) {
Toast.makeText(context, info, Toast.LENGTH_LONG);
} else {
toast.setText(info);
}
toast.show();
}
}public class WebUtil {
public static String fileDir = Environment.getExternalStorageDirectory() + "/maintain/";
public static String filecache = fileDir + "cache/";
}