Add final identifier for method parameters to avoid mistake intention…

app/src/main/java/com/example/abner/stickerdemo/DisplayActivity.java

@@ -14,7 +14,7 @@ public class DisplayActivity extends AppCompatActivity {
     private ImageView mDisplayImageView;
 
     @Override
-    protected void onCreate(Bundle savedInstanceState) {
+    protected void onCreate(final Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_display);
         Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
@@ -30,14 +30,14 @@ protected void onCreate(Bundle savedInstanceState) {
     }
 
     @Override
-    public boolean onCreateOptionsMenu(Menu menu) {
+    public boolean onCreateOptionsMenu(final Menu menu) {
         // Inflate the menu; this adds items to the action bar if it is present.
         getMenuInflater().inflate(R.menu.menu_dislplay, menu);
         return true;
     }
 
     @Override
-    public boolean onOptionsItemSelected(MenuItem item) {
+    public boolean onOptionsItemSelected(final MenuItem item) {
         // Handle action bar item clicks here. The action bar will
         // automatically handle clicks on the Home/Up button, so long
         // as you specify a parent activity in AndroidManifest.xml.

app/src/main/java/com/example/abner/stickerdemo/MainActivity.java

@@ -28,7 +28,7 @@ public class MainActivity extends AppCompatActivity {
     private RelativeLayout mContentRootView;
 
     @Override
-    protected void onCreate(Bundle savedInstanceState) {
+    protected void onCreate(final Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_main);
         mContentRootView = (RelativeLayout) findViewById(R.id.rl_content_root);
@@ -47,14 +47,14 @@ public void onClick(View view) {
     }
 
     @Override
-    public boolean onCreateOptionsMenu(Menu menu) {
+    public boolean onCreateOptionsMenu(final Menu menu) {
         // Inflate the menu; this adds items to the action bar if it is present.
         getMenuInflater().inflate(R.menu.menu_main, menu);
         return true;
     }
 
     @Override
-    public boolean onOptionsItemSelected(MenuItem item) {
+    public boolean onOptionsItemSelected(final MenuItem item) {
         // Handle action bar item clicks here. The action bar will
         // automatically handle clicks on the Home/Up button, so long
         // as you specify a parent activity in AndroidManifest.xml.
@@ -107,7 +107,7 @@ public void onTop(StickerView stickerView) {
     /**
      * 设置当前处于编辑模式的贴纸
      */
-    private void setCurrentEdit(StickerView stickerView) {
+    private void setCurrentEdit(final StickerView stickerView) {
         if (mCurrentView != null) {
             mCurrentView.setInEdit(false);
         }

app/src/main/java/com/example/abner/stickerdemo/model/StickerPropertyModel.java

@@ -35,71 +35,71 @@ public int getHorizonMirror() {
         return horizonMirror;
     }
 
-    public void setHorizonMirror(int horizonMirror) {
+    public void setHorizonMirror(final int horizonMirror) {
         this.horizonMirror = horizonMirror;
     }
 
     public String getStickerURL() {
         return stickerURL;
     }
 
-    public void setStickerURL(String stickerURL) {
+    public void setStickerURL(final String stickerURL) {
         this.stickerURL = stickerURL;
     }
 
     public long getStickerId() {
         return stickerId;
     }
 
-    public void setStickerId(long stickerId) {
+    public void setStickerId(final long stickerId) {
         this.stickerId = stickerId;
     }
 
     public String getText() {
         return text;
     }
 
-    public void setText(String text) {
+    public void setText(final String text) {
         this.text = text;
     }
 
     public float getxLocation() {
         return xLocation;
     }
 
-    public void setxLocation(float xLocation) {
+    public void setxLocation(final float xLocation) {
         this.xLocation = xLocation;
     }
 
     public float getyLocation() {
         return yLocation;
     }
 
-    public void setyLocation(float yLocation) {
+    public void setyLocation(final float yLocation) {
         this.yLocation = yLocation;
     }
 
     public float getDegree() {
         return degree;
     }
 
-    public void setDegree(float degree) {
+    public void setDegree(final float degree) {
         this.degree = degree;
     }
 
     public float getScaling() {
         return scaling;
     }
 
-    public void setScaling(float scaling) {
+    public void setScaling(final float scaling) {
         this.scaling = scaling;
     }
 
     public int getOrder() {
         return order;
     }
 
-    public void setOrder(int order) {
+    public void setOrder(final int order) {
         this.order = order;
     }
 }

app/src/main/java/com/example/abner/stickerdemo/utils/DensityUtils.java

@@ -15,15 +15,15 @@ public class DensityUtils {
     /**
      * 根据手机的分辨率从 dp 的单位 转成为 px(像素)
      */
-    public static int dip2px(Context context, float dpValue) {
+    public static int dip2px(final Context context, final float dpValue) {
         final float scale = context.getResources().getDisplayMetrics().density;
         return (int) (dpValue * scale + 0.5f);
     }
 
     /**
      * 根据手机的分辨率从 px(像素) 的单位 转成为 dp
      */
-    public static int px2dip(Context context, float pxValue) {
+    public static int px2dip(final Context context, final float pxValue) {
         final float scale = context.getResources().getDisplayMetrics().density;
         return (int) (pxValue / scale + 0.5f);
     }
@@ -34,15 +34,15 @@ public static int px2dip(Context context, float pxValue) {
      * @param context
      * @return
      */
-    public static int getScreenWidth(Context context) {
+    public static int getScreenWidth(final Context context) {
         Display display = ((WindowManager) context
                 .getSystemService(Context.WINDOW_SERVICE)).getDefaultDisplay();
         // Point p = new Point();
         // display.getSize(p);//need api13
         return display.getWidth();
     }
 
-    public static int getScreenHeight(Context context) {
+    public static int getScreenHeight(final Context context) {
         Display display = ((WindowManager) context
                 .getSystemService(Context.WINDOW_SERVICE)).getDefaultDisplay();
         // Point p = new Point();
@@ -57,7 +57,7 @@ public static int getScreenHeight(Context context) {
      * @param context
      * @return
      */
-    public static int getStatusBarHeight(Context context) {
+    public static int getStatusBarHeight(final Context context) {
         Class<?> c = null;
         Object obj = null;
         Field field = null;
@@ -76,7 +76,7 @@ public static int getStatusBarHeight(Context context) {
         return sbar;
     }
 
-    public static int getNavigationBarHeight(Context context) {
+    public static int getNavigationBarHeight(final Context context) {
         Resources resources = context.getResources();
         int resourceId = resources.getIdentifier("navigation_bar_height", "dimen", "android");
         if (resourceId > 0) {
@@ -91,7 +91,7 @@ public static int getNavigationBarHeight(Context context) {
      * @param c
      * @return
      */
-    public static long calculateLength(CharSequence c) {
+    public static long calculateLength(final CharSequence c) {
         double len = 0;
         for (int i = 0; i < c.length(); i++) {
             int tmp = (int) c.charAt(i);

app/src/main/java/com/example/abner/stickerdemo/utils/FileUtils.java

@@ -25,7 +25,7 @@ public class FileUtils {
 
     private static final String TEMP_DIR = "Abner/.TEMP";
 
-    public static FileUtils getInstance(Context context) {
+    public static FileUtils getInstance(final Context context) {
         if (instance == null) {
             synchronized (FileUtils.class) {
                 if (instance == null) {
@@ -43,7 +43,7 @@ public static FileUtils getInstance(Context context) {
      * @param bm
      * @return
      */
-    public static String saveBitmapToLocal(Bitmap bm, Context context) {
+    public static String saveBitmapToLocal(final Bitmap bm, final Context context) {
         String path = null;
         try {
             File file = FileUtils.getInstance(context).createTempFile("IMG_", ".jpg");
@@ -69,7 +69,7 @@ public static String saveBitmapToLocal(Bitmap bm, Context context) {
      * @return
      * @throws java.io.IOException
      */
-    public File createTempFile(String prefix, String extension)
+    public File createTempFile(final String prefix, final String extension)
             throws IOException {
         File file = new File(getAppDirPath() + ".TEMP/" + prefix
                 + System.currentTimeMillis() + extension);
@@ -130,7 +130,7 @@ private FileUtils() {
      *
      * @param dirName
      */
-    public File creatSDDir(String dirName) {
+    public File creatSDDir(final String dirName) {
         File dir = new File(getLocalPath() + dirName);
         dir.mkdirs();
         return dir;

app/src/main/java/com/example/abner/stickerdemo/view/StickerView.java

@@ -92,19 +92,19 @@ public class StickerView extends ImageView {
     //水平镜像
     private boolean isHorizonMirror = false;
 
-    public StickerView(Context context, AttributeSet attrs) {
+    public StickerView(final Context context, final AttributeSet attrs) {
         super(context, attrs);
         stickerId = 0;
         init();
     }
 
-    public StickerView(Context context) {
+    public StickerView(final Context context) {
         super(context);
         stickerId = 0;
         init();
     }
 
-    public StickerView(Context context, AttributeSet attrs, int defStyleAttr) {
+    public StickerView(final Context context, final AttributeSet attrs, final int defStyleAttr) {
         super(context, attrs, defStyleAttr);
         stickerId = 0;
         init();
@@ -129,7 +129,7 @@ private void init() {
     }
 
     @Override
-    protected void onDraw(Canvas canvas) {
+    protected void onDraw(final Canvas canvas) {
         if (mBitmap != null) {
 
 
@@ -184,11 +184,11 @@ protected void onDraw(Canvas canvas) {
     }
 
     @Override
-    public void setImageResource(int resId) {
+    public void setImageResource(final int resId) {
         setBitmap(BitmapFactory.decodeResource(getResources(), resId));
     }
 
-    public void setBitmap(Bitmap bitmap) {
+    public void setBitmap(final Bitmap bitmap) {
         matrix.reset();
         mBitmap = bitmap;
         setDiagonalLength();
@@ -258,7 +258,7 @@ private void initBitmaps() {
     }
 
     @Override
-    public boolean onTouchEvent(MotionEvent event) {
+    public boolean onTouchEvent(final MotionEvent event) {
         int action = MotionEventCompat.getActionMasked(event);
         boolean handled = true;
         switch (action) {
@@ -374,7 +374,7 @@ public boolean onTouchEvent(MotionEvent event) {
      * @param model
      * @return
      */
-    public StickerPropertyModel calculate(StickerPropertyModel model) {
+    public StickerPropertyModel calculate(final StickerPropertyModel model) {
         float[] v = new float[9];
         matrix.getValues(v);
         // translation is simple
@@ -420,7 +420,7 @@ public StickerPropertyModel calculate(StickerPropertyModel model) {
      *
      * @return
      */
-    private boolean isInBitmap(MotionEvent event) {
+    private boolean isInBitmap(final MotionEvent event) {
         float[] arrayOfFloat1 = new float[9];
         this.matrix.getValues(arrayOfFloat1);
         //左上角
@@ -460,7 +460,7 @@ private boolean isInBitmap(MotionEvent event) {
      * @param y
      * @return
      */
-    private boolean pointInRect(float[] xRange, float[] yRange, float x, float y) {
+    private boolean pointInRect(final float[] xRange, final float[] yRange, final float x, final float y) {
         //四条边的长度
         double a1 = Math.hypot(xRange[0] - xRange[1], yRange[0] - yRange[1]);
         double a2 = Math.hypot(xRange[1] - xRange[2], yRange[1] - yRange[2]);
@@ -511,7 +511,7 @@ private boolean isInButton(MotionEvent event, Rect rect) {
      * @param event
      * @return
      */
-    private boolean isInResize(MotionEvent event) {
+    private boolean isInResize(final MotionEvent event) {
         int left = -20 + this.dst_resize.left;
         int top = -20 + this.dst_resize.top;
         int right = 20 + this.dst_resize.right;
@@ -524,7 +524,7 @@ private boolean isInResize(MotionEvent event) {
      *
      * @param event
      */
-    private void midPointToStartPoint(MotionEvent event) {
+    private void midPointToStartPoint(final MotionEvent event) {
         float[] arrayOfFloat = new float[9];
         matrix.getValues(arrayOfFloat);
         float f1 = 0.0f * arrayOfFloat[0] + 0.0f * arrayOfFloat[1] + arrayOfFloat[2];
@@ -539,7 +539,7 @@ private void midPointToStartPoint(MotionEvent event) {
      *
      * @param paramPointF
      */
-    private void midDiagonalPoint(PointF paramPointF) {
+    private void midDiagonalPoint(final PointF paramPointF) {
         float[] arrayOfFloat = new float[9];
         this.matrix.getValues(arrayOfFloat);
         float f1 = 0.0F * arrayOfFloat[0] + 0.0F * arrayOfFloat[1] + arrayOfFloat[2];
@@ -558,7 +558,7 @@ private void midDiagonalPoint(PointF paramPointF) {
      * @param event
      * @return
      */
-    private float rotationToStartPoint(MotionEvent event) {
+    private float rotationToStartPoint(final MotionEvent event) {
 
         float[] arrayOfFloat = new float[9];
         matrix.getValues(arrayOfFloat);
@@ -574,15 +574,15 @@ private float rotationToStartPoint(MotionEvent event) {
      * @param event
      * @return
      */
-    private float diagonalLength(MotionEvent event) {
+    private float diagonalLength(final MotionEvent event) {
         float diagonalLength = (float) Math.hypot(event.getX(0) - mid.x, event.getY(0) - mid.y);
         return diagonalLength;
     }
 
     /**
      * 计算双指之间的距离
      */
-    private float spacing(MotionEvent event) {
+    private float spacing(final MotionEvent event) {
         if (event.getPointerCount() == 2) {
             float x = event.getX(0) - event.getX(1);
             float y = event.getY(0) - event.getY(1);
@@ -600,11 +600,11 @@ public interface OperationListener {
         void onTop(StickerView stickerView);
     }
 
-    public void setOperationListener(OperationListener operationListener) {
+    public void setOperationListener(final OperationListener operationListener) {
         this.operationListener = operationListener;
     }
 
-    public void setInEdit(boolean isInEdit) {
+    public void setInEdit(final boolean isInEdit) {
         this.isInEdit = isInEdit;
         invalidate();
     }