初始化代码

moduleUtil/src/main/java/com/qxcm/moduleutil/widget/ClearEditText.java

@@ -0,0 +1,144 @@
+package com.qxcm.moduleutil.widget;
+
+import android.content.Context;
+import android.graphics.Rect;
+import android.graphics.drawable.Drawable;
+import android.text.Editable;
+import android.text.TextWatcher;
+import android.util.AttributeSet;
+import android.view.MotionEvent;
+import android.view.View;
+
+import androidx.appcompat.widget.AppCompatEditText;
+
+import com.qxcm.moduleutil.R;
+
+
+/**
+ * 带删除按钮的editText
+ * Created by air on 2017/1/12.
+ * updated by air on 2017/3/20
+ */
+public class ClearEditText extends AppCompatEditText implements View.OnFocusChangeListener, TextWatcher {
+
+    //EditText右侧的删除按钮
+    private Drawable mClearDrawable;
+
+    private boolean hasFocus;
+
+    private onFocusListener onFocusListener;
+
+    public ClearEditText(Context context) {
+        this(context, null);
+    }
+
+    public ClearEditText(Context context, AttributeSet attrs) {
+        this(context, attrs, android.R.attr.editTextStyle);
+    }
+
+    public ClearEditText(Context context, AttributeSet attrs, int defStyle) {
+        super(context, attrs, defStyle);
+        init();
+    }
+
+    private void init() {
+        //获取EditText的DrawableRight,假如没有设置我们就使用默认的图片
+        mClearDrawable = getCompoundDrawables()[2];
+        if (mClearDrawable == null) {
+            mClearDrawable = getResources().getDrawable(R.mipmap.common_et_clear_icon);
+        }
+        mClearDrawable.setBounds(0, 0, mClearDrawable.getIntrinsicWidth(),
+                mClearDrawable.getIntrinsicHeight());
+        // 默认设置隐藏图标
+        setClearIconVisible(false);
+        // 设置焦点改变的监听
+        setOnFocusChangeListener(this);
+        // 设置输入框里面内容发生改变的监听
+        addTextChangedListener(this);
+    }
+
+    /* *
+     * @说明：isInnerWidth, isInnerHeight为ture，触摸点在删除图标之内，则视为点击了删除图标
+     * event.getX() 获取相对应自身左上角的X坐标
+     * event.getY() 获取相对应自身左上角的Y坐标
+     * getWidth() 获取控件的宽度
+     * getHeight() 获取控件的高度
+     * getTotalPaddingRight() 获取删除图标左边缘到控件右边缘的距离
+     * getPaddingRight() 获取删除图标右边缘到控件右边缘的距离
+     * isInnerWidth:
+     *  getWidth() - getTotalPaddingRight() 计算删除图标左边缘到控件左边缘的距离
+     *  getWidth() - getPaddingRight() 计算删除图标右边缘到控件左边缘的距离
+     * isInnerHeight:
+     *  distance 删除图标顶部边缘到控件顶部边缘的距离
+     *  distance + height 删除图标底部边缘到控件顶部边缘的距离
+     */
+    @Override
+    public boolean onTouchEvent(MotionEvent event) {
+        if (event.getAction() == MotionEvent.ACTION_UP) {
+            if (getCompoundDrawables()[2] != null) {
+                int x = (int) event.getX();
+                int y = (int) event.getY();
+                Rect rect = getCompoundDrawables()[2].getBounds();
+                int height = rect.height();
+                int distance = (getHeight() - height) / 2;
+                boolean isInnerWidth = x > (getWidth() - getTotalPaddingRight()) && x < (getWidth() - getPaddingRight());
+                boolean isInnerHeight = y > distance && y < (distance + height);
+                if (isInnerWidth && isInnerHeight) {
+                    this.setText("");
+                }
+            }
+        }
+        return super.onTouchEvent(event);
+    }
+
+    public void setClearIconVisible(boolean visible) {
+        Drawable right = visible ? mClearDrawable : null;
+        setCompoundDrawables(getCompoundDrawables()[0],
+                getCompoundDrawables()[1], right, getCompoundDrawables()[3]);
+    }
+
+
+    /**
+     * 当ClearEditText焦点发生变化的时候，
+     * 输入长度为零，隐藏删除图标，否则，显示删除图标
+     */
+    @Override
+    public void onFocusChange(View v, boolean hasFocus) {
+        this.hasFocus = hasFocus;
+        if (hasFocus) {
+            setClearIconVisible(getText().length() > 0);
+            if (onFocusListener != null) {
+                onFocusListener.onFocus();
+            }
+        } else {
+            setClearIconVisible(false);
+        }
+    }
+
+
+    @Override
+    public void beforeTextChanged(CharSequence s, int start, int count, int after) {
+
+    }
+
+    @Override
+    public void afterTextChanged(Editable s) {
+
+    }
+
+    @Override
+    public void onTextChanged(CharSequence s, int start, int count, int after) {
+        if (hasFocus) {
+            setClearIconVisible(s.length() > 0);
+        }
+    }
+
+    public interface onFocusListener {
+        void onFocus();
+    }
+
+
+    public void setOnFocusListener(ClearEditText.onFocusListener onFocusListener) {
+        this.onFocusListener = onFocusListener;
+    }
+}