translate the note of FileUtil into English

translate the note of FileUtil into English

app/src/main/java/com/frank/ffmpeg/util/BitmapUtil.java

@@ -13,7 +13,7 @@ import java.io.FileOutputStream;
 import java.io.IOException;
 
 /**
- * bitmap工具类：文字转成图片
+ * bitmap tool
  * Created by frank on 2018/1/24.
  */
 
@@ -23,12 +23,13 @@ public class BitmapUtil {
     private final static int TEXT_COLOR = Color.RED;
 
     /**
-     * 文本转成Bitmap
-     * @param text 文本内容
-     * @param context 上下文
-     * @return 图片的bitmap
+     * convert text to bitmap
+     *
+     * @param text    text
+     * @param context context
+     * @return bitmap of teh text
      */
-    private static Bitmap textToBitmap(String text , Context context) {
+    private static Bitmap textToBitmap(String text, Context context) {
         float scale = context.getResources().getDisplayMetrics().scaledDensity;
         TextView tv = new TextView(context);
         LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(
@@ -47,18 +48,19 @@ public class BitmapUtil {
         tv.buildDrawingCache();
         Bitmap bitmap = tv.getDrawingCache();
         int rate = bitmap.getHeight() / 20;
-        return Bitmap.createScaledBitmap(bitmap, bitmap.getWidth()/rate, 20, false);
+        return Bitmap.createScaledBitmap(bitmap, bitmap.getWidth() / rate, 20, false);
     }
 
     /**
-     * 文字生成图片
+     * convert text to picture
+     *
      * @param filePath filePath
-     * @param text text
-     * @param context context
-     * @return 生成图片是否成功
+     * @param text     text
+     * @param context  context
+     * @return result of generating picture
      */
-    public static boolean textToPicture(String filePath, String text , Context context){
-        Bitmap bitmap = textToBitmap(text , context);
+    public static boolean textToPicture(String filePath, String text, Context context) {
+        Bitmap bitmap = textToBitmap(text, context);
         FileOutputStream outputStream = null;
         try {
             outputStream = new FileOutputStream(filePath);
@@ -67,9 +69,9 @@ public class BitmapUtil {
         } catch (IOException e) {
             e.printStackTrace();
             return false;
-        }finally {
+        } finally {
             try {
-                if(outputStream != null){
+                if (outputStream != null) {
                     outputStream.close();
                 }
             } catch (IOException e) {
@@ -80,9 +82,10 @@ public class BitmapUtil {
     }
 
     /**
-     * 删除源文件
+     * delete file
+     *
      * @param filePath filePath
-     * @return 删除是否成功
+     * @return result of deletion
      */
     public static boolean deleteTextFile(String filePath) {
         File file = new File(filePath);

app/src/main/java/com/frank/ffmpeg/util/FileUtil.java

@@ -9,7 +9,7 @@ import java.io.FileOutputStream;
 import java.io.IOException;
 
 /**
- * 文件工具类
+ * file tool
  * Created by frank on 2018/5/9.
  */
 
@@ -37,18 +37,18 @@ public class FileUtil {
     private final static String TYPE_MOV = "mov";
     private final static String TYPE_MPG = "mpg";
 
-    public static boolean concatFile(String srcFilePath, String appendFilePath, String concatFilePath){
-        if(TextUtils.isEmpty(srcFilePath)
+    public static boolean concatFile(String srcFilePath, String appendFilePath, String concatFilePath) {
+        if (TextUtils.isEmpty(srcFilePath)
                 || TextUtils.isEmpty(appendFilePath)
-                || TextUtils.isEmpty(concatFilePath)){
+                || TextUtils.isEmpty(concatFilePath)) {
             return false;
         }
         File srcFile = new File(srcFilePath);
-        if(!srcFile.exists()){
+        if (!srcFile.exists()) {
             return false;
         }
         File appendFile = new File(appendFilePath);
-        if(!appendFile.exists()){
+        if (!appendFile.exists()) {
             return false;
         }
         FileOutputStream outputStream = null;
@@ -59,25 +59,25 @@ public class FileUtil {
             outputStream = new FileOutputStream(new File(concatFilePath));
             byte[] data = new byte[1024];
             int len;
-            while ((len = inputStream1.read(data)) > 0){
+            while ((len = inputStream1.read(data)) > 0) {
                 outputStream.write(data, 0, len);
             }
             outputStream.flush();
-            while ((len = inputStream2.read(data)) > 0){
+            while ((len = inputStream2.read(data)) > 0) {
                 outputStream.write(data, 0, len);
             }
             outputStream.flush();
-        } catch (IOException e){
+        } catch (IOException e) {
             e.printStackTrace();
-        }finally {
+        } finally {
             try {
-                if(inputStream1 != null){
+                if (inputStream1 != null) {
                     inputStream1.close();
                 }
-                if(inputStream2 != null){
+                if (inputStream2 != null) {
                     inputStream2.close();
                 }
-                if(outputStream != null){
+                if (outputStream != null) {
                     outputStream.close();
                 }
             } catch (IOException e) {
@@ -88,16 +88,17 @@ public class FileUtil {
     }
 
     /**
-     * 判断文件是否存在
-     * @param path 文件路径
-     * @return 文件是否存在
+     * check the file exist or not
+     *
+     * @param path the path of file
+     * @return result of exist or not
      */
-    public static boolean checkFileExist(String path){
+    public static boolean checkFileExist(String path) {
         if (TextUtils.isEmpty(path)) {
             return false;
         }
         File file = new File(path);
-        if(!file.exists()){
+        if (!file.exists()) {
             Log.e("FileUtil", path + " is not exist!");
             return false;
         }
@@ -178,7 +179,7 @@ public class FileUtil {
             }
             outputStream = new FileOutputStream(listFile);
             StringBuilder fileBuilder = new StringBuilder();
-            for (String file:fileArray) {
+            for (String file : fileArray) {
                 fileBuilder
                         .append("file")
                         .append(" ")