FileUtil.java

package com.smartalk.gank.utils;

import android.graphics.Bitmap;
import android.net.Uri;
import android.os.Environment;

import java.io.File;
import java.io.FileOutputStream;

/**
 * 文件操作辅助类
 * Created by panl on 16/1/4.
 */
public class FileUtil {

  private FileUtil() {
    throw new UnsupportedOperationException("can not be instanced");
  }

  public static boolean isSDCardEnable() {
    return Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED);
  }

  public static Uri saveBitmapToSDCard(Bitmap bitmap, String title) {
    File appDir = new File(Environment.getExternalStorageDirectory(), "Gank");
    if (!appDir.exists()) {
      appDir.mkdirs();
    }
    String fileName = title.replace("/", "-") + "-girl.jpg";
    File file = new File(appDir, fileName);
    FileOutputStream outputStream;
    try {
      outputStream = new FileOutputStream(file);
      assert bitmap != null;
      bitmap.compress(Bitmap.CompressFormat.JPEG, 100, outputStream);
      outputStream.flush();
      outputStream.close();
    } catch (Exception e) {
      e.printStackTrace();
      return null;
    }
    return Uri.fromFile(file);
  }

}