我已经在EditText小部件中添加了文本右侧的图像,使用以下XML:

<EditText
  android:id="@+id/txtsearch"
  ...
  android:layout_gravity="center_vertical"
  android:background="@layout/shape"
  android:hint="Enter place,city,state"
  android:drawableRight="@drawable/cross" />

但我想在单击嵌入图像时清除EditText。我该怎么做呢?


当前回答

我在Mono中实现了@aristo_sh answer。Droid (Xamarin)因为它是一个委托匿名方法你不能返回true或false你必须取e。event。handled。我还隐藏了点击键盘

editText.Touch += (sender, e) => {
                    e.Handled = false;
                    if (e.Event.Action == MotionEventActions.Up)
                    {
                        if (e.Event.RawX >= (bibEditText.Right - (bibEditText.GetCompoundDrawables()[2]).Bounds.Width()))
                        {
                            SearchRunner();
                            InputMethodManager manager = (InputMethodManager)GetSystemService(InputMethodService);
                            manager.HideSoftInputFromWindow(editText.WindowToken, 0);
                            e.Handled = true;
                        }
                    }
                };

其他回答

That last contribution's use of contains(x,y) won't work directly on the result of getBounds() (except, by coincidence, when using "left" drawables). The getBounds method only provides the Rect defining points of the drawable item normalized with origin at 0,0 - so, you actually need to do the math of the original post to find out if the click is in the area of the drawable in the context of the containing EditText's dimensions, but change it for top, right, left etc. Alternatively you could describe a Rect that has coordinates actually relative to its position in the EditText container and use contains(), although in the end you're doing the same math.

将它们结合在一起就可以得到一个相当完整的解决方案,我只添加了一个实例属性consumesEvent,它让API用户决定是否应该通过使用其结果设置ACTION_CANCEL来传递单击事件。

此外,我不明白为什么边界和actionX, actionony值是实例属性,而不仅仅是堆栈上的本地属性。

下面是我在上面的基础上制作的实现的剪接图。它修复了正确使用事件需要返回false的问题。它增加了一个“模糊”因素。在我使用EditText字段中的Voice控件图标的用例中,我发现很难单击,因此模糊增加了被认为是单击可绘制对象的有效边界。对我来说,15个很好。我只需要drawableRight,所以我没有把数学插入其他的,以节省一些空间,但你明白这个想法。

package com.example.android;

import android.content.Context;
import android.graphics.drawable.Drawable;
import android.util.AttributeSet;
import android.util.Log;
import android.view.MotionEvent;
import android.widget.EditText;
import android.graphics.Rect;

import com.example.android.DrawableClickListener;

public class ClickableButtonEditText extends EditText {
  public static final String LOG_TAG = "ClickableButtonEditText";

  private Drawable drawableRight;
  private Drawable drawableLeft;
  private Drawable drawableTop;
  private Drawable drawableBottom;
  private boolean consumeEvent = false;
  private int fuzz = 0;

  private DrawableClickListener clickListener;

  public ClickableButtonEditText(Context context, AttributeSet attrs, int defStyle) {
    super(context, attrs, defStyle);
  }

  public ClickableButtonEditText(Context context, AttributeSet attrs) {
    super(context, attrs);
  }

  public ClickableButtonEditText(Context context) {
    super(context);
  }

  public void consumeEvent() {
    this.setConsumeEvent(true);
  }

  public void setConsumeEvent(boolean b) {
    this.consumeEvent = b;
  }

  public void setFuzz(int z) {
    this.fuzz = z;
  }

  public int getFuzz() {
    return fuzz;
  }

  @Override
  public void setCompoundDrawables(Drawable left, Drawable top, Drawable right, Drawable bottom) {
    if (right != null) {
      drawableRight = right;
    }

    if (left != null) {
      drawableLeft = left;
    }
    super.setCompoundDrawables(left, top, right, bottom);
  }

  @Override
  public boolean onTouchEvent(MotionEvent event) {
    if (event.getAction() == MotionEvent.ACTION_DOWN) {
      int x, y;
      Rect bounds;
      x = (int) event.getX();
      y = (int) event.getY();
      // this works for left since container shares 0,0 origin with bounds
      if (drawableLeft != null) {
        bounds = drawableLeft.getBounds();
        if (bounds.contains(x - fuzz, y - fuzz)) {
          clickListener.onClick(DrawableClickListener.DrawablePosition.LEFT);
          if (consumeEvent) {
            event.setAction(MotionEvent.ACTION_CANCEL);
            return false;
          }
        }
      } else if (drawableRight != null) {
        bounds = drawableRight.getBounds();
        if (x >= (this.getRight() - bounds.width() - fuzz) && x <= (this.getRight() - this.getPaddingRight() + fuzz) 
              && y >= (this.getPaddingTop() - fuzz) && y <= (this.getHeight() - this.getPaddingBottom()) + fuzz) {

          clickListener.onClick(DrawableClickListener.DrawablePosition.RIGHT);
          if (consumeEvent) {
            event.setAction(MotionEvent.ACTION_CANCEL);
            return false;
          }
        }
      } else if (drawableTop != null) {
        // not impl reader exercise :)
      } else if (drawableBottom != null) {
        // not impl reader exercise :)
      }
    }

    return super.onTouchEvent(event);
  }

  @Override
  protected void finalize() throws Throwable {
    drawableRight = null;
    drawableBottom = null;
    drawableLeft = null;
    drawableTop = null;
    super.finalize();
  }

  public void setDrawableClickListener(DrawableClickListener listener) {
    this.clickListener = listener;
  }
}
@Override
    public boolean onTouch(View v, MotionEvent event) {

        Drawable drawableObj = getResources().getDrawable(R.drawable.search_btn);
        int drawableWidth = drawableObj.getIntrinsicWidth();

        int x = (int) event.getX();
        int y = (int) event.getY();

        if (event != null && event.getAction() == MotionEvent.ACTION_UP) {
            if (x >= (searchPanel_search.getWidth() - drawableWidth - searchPanel_search.getPaddingRight())
                    && x <= (searchPanel_search.getWidth() - searchPanel_search.getPaddingRight())

                    && y >= searchPanel_search.getPaddingTop() && y <= (searchPanel_search.getHeight() - searchPanel_search.getPaddingBottom())) {

                getSearchData();
            }

            else {
                InputMethodManager imm = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
                imm.showSoftInput(searchPanel_search, InputMethodManager.SHOW_FORCED);
            }
        }
        return super.onTouchEvent(event);

    }

我认为如果我们使用一些技巧会容易得多:)

用图标创建一个图像按钮,并设置其背景 颜色要透明。 将图像按钮放在EditText和右边 实现按钮的onclick侦听器来执行您的 函数

Done

<FrameLayout
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:padding="5dp" >

            <EditText
                android:id="@+id/edt_status_text"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_marginBottom="10dp"
                android:background="@drawable/txt_box_blank"
                android:ems="10"
                android:hint="@string/statusnote"
                android:paddingLeft="5dp"
                android:paddingRight="10dp"
                android:textColor="@android:color/black" />

            <Button
                android:id="@+id/note_del"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_gravity="right"
                android:layout_marginRight="1dp"
                android:layout_marginTop="5dp"
                android:background="@android:drawable/ic_delete" />
        </FrameLayout>

最好在编辑文本的右边有ImageButton,并给负布局边距与编辑文本重叠。在ImageButton上设置监听器并执行操作。