添加焦点监听 获取焦点才展示删除按钮

Author: MZCretin

app/src/main/res/layout/activity_main.xml

@@ -53,8 +53,6 @@
         android:layout_marginRight="20dp"
         android:layout_marginTop="10dp"
         android:background="#ffffff"
-        app:drawableWidth="20dp"
-        android:textSize="14sp"
-        app:scaleSize="0.5"/>
+        android:textSize="14sp"/>
 
 </LinearLayout>

clearedittext/src/main/java/com/cretin/www/clearedittext/view/ClearEditText.java

@@ -16,6 +16,7 @@
 import android.util.AttributeSet;
 import android.util.Log;
 import android.view.MotionEvent;
+import android.view.View;
 import android.widget.EditText;
 
 import com.cretin.www.clearedittext.R;
@@ -26,7 +27,7 @@
  */
 
 public class ClearEditText extends EditText {
-    private static final float DEFAUT_SCALE = 0.4f;
+    private static final float DEFAUT_SCALE = 0.3f;
     private Bitmap mClearBitmap;
     private Paint mPaint;
     private int mWidth;
@@ -97,6 +98,22 @@ public void beforeTextChanged(CharSequence s, int start, int count, int after) {
             public void afterTextChanged(Editable s) {
             }
         });
+
+        setOnFocusChangeListener(new OnFocusChangeListener() {
+            @Override
+            public void onFocusChange(View v, boolean hasFocus) {
+                if ( hasFocus ) {
+                    if ( !TextUtils.isEmpty(getText().toString()) ) {
+                        showClose = true;
+                    }else{
+                        showClose = false;
+                    }
+                }else{
+                    showClose = false;
+                }
+                invalidate();
+            }
+        });
     }
 
     // 处理删除事件
@@ -119,6 +136,7 @@ protected void finalize() throws Throwable {
         super.finalize();
     }
 
+
     @Override
     protected void onDraw(Canvas canvas) {
         super.onDraw(canvas);