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

我创建了一个简单的自定义触摸侦听器类,而不是自定义EditText

public class MyTouchListener implements View.OnTouchListener {
private EditText editText;

public MyTouchListener(EditText editText) {
    this.editText = editText;

    setupDrawable(this.editText);
}

private void setupDrawable(final EditText editText) {
    editText.addTextChangedListener(new TextWatcher() {
        @Override
        public void beforeTextChanged(CharSequence s, int start, int count, int after) {

        }

        @Override
        public void onTextChanged(CharSequence s, int start, int before, int count) {
            if(s.length()>0)
                editText.setCompoundDrawablesWithIntrinsicBounds(0,0, R.drawable.clearicon,0);
            else
                editText.setCompoundDrawablesWithIntrinsicBounds(0,0, 0,0);

        }

        @Override
        public void afterTextChanged(Editable s) {

        }
    });
}

@Override
public boolean onTouch(View v, MotionEvent event) {
    if(event.getAction() == MotionEvent.ACTION_UP) {
        if(editText.getCompoundDrawables()[2]!=null){
            if(event.getX() >= (editText.getRight()- editText.getLeft() - editText.getCompoundDrawables()[2].getBounds().width())) {
                editText.setText("");
            }
        }
    }
    return false;

}

}

当EditText为空白时,将没有可绘制对象。绘图将显示我们开始编辑以清除EditText的时间。

你可以设置触摸监听器

mEditText.setOnTouchListener(new MyTouchListener(mEditText));

其他回答

考虑以下几点。这不是最优雅的解决方案,但它是有效的,我刚刚测试过。

Create a customized EditText class CustomEditText.java: import android.content.Context; import android.graphics.Rect; import android.graphics.drawable.Drawable; import android.util.AttributeSet; import android.view.MotionEvent; import android.widget.EditText; public class CustomEditText extends EditText { private Drawable dRight; private Rect rBounds; public CustomEditText(Context context, AttributeSet attrs, int defStyle) { super(context, attrs, defStyle); } public CustomEditText(Context context, AttributeSet attrs) { super(context, attrs); } public CustomEditText(Context context) { super(context); } @Override public void setCompoundDrawables(Drawable left, Drawable top, Drawable right, Drawable bottom) { if(right !=null) { dRight = right; } super.setCompoundDrawables(left, top, right, bottom); } @Override public boolean onTouchEvent(MotionEvent event) { if(event.getAction() == MotionEvent.ACTION_UP && dRight!=null) { rBounds = dRight.getBounds(); final int x = (int)event.getX(); final int y = (int)event.getY(); //System.out.println("x:/y: "+x+"/"+y); //System.out.println("bounds: "+bounds.left+"/"+bounds.right+"/"+bounds.top+"/"+bounds.bottom); //check to make sure the touch event was within the bounds of the drawable if(x>=(this.getRight()-rBounds.width()) && x<=(this.getRight()-this.getPaddingRight()) && y>=this.getPaddingTop() && y<=(this.getHeight()-this.getPaddingBottom())) { //System.out.println("touch"); this.setText(""); event.setAction(MotionEvent.ACTION_CANCEL);//use this to prevent the keyboard from coming up } } return super.onTouchEvent(event); } @Override protected void finalize() throws Throwable { dRight = null; rBounds = null; super.finalize(); } } Change your layout XML to this (where com.example is your actual project package name): <com.example.CustomEditText android:id="@+id/txtsearch" … android:layout_gravity="center_vertical" android:background="@layout/shape" android:hint="Enter place,city,state" android:drawableRight="@drawable/cross" /> Finally, add this (or something similar) to your activity: … CustomEditText et = (CustomEditText) this.findViewById(R.id.txtsearch); …

我可能在计算嵌套drawable的触摸边界时有点出错,但你懂的。

我希望这能有所帮助。

这对我很有用,

mEditTextSearch.addTextChangedListener(new TextWatcher() {

        @Override
        public void onTextChanged(CharSequence s, int start, int before, int count) {
            if(s.length()>0){
                mEditTextSearch.setCompoundDrawablesWithIntrinsicBounds(null, null, getResources().getDrawable(android.R.drawable.ic_delete), null);
            }else{
                mEditTextSearch.setCompoundDrawablesWithIntrinsicBounds(null, null, getResources().getDrawable(R.drawable.abc_ic_search), null);
            }
        }
        @Override
        public void beforeTextChanged(CharSequence s, int start, int count, int after) {
        }
        @Override
        public void afterTextChanged(Editable s) {
        }
    });
    mEditTextSearch.setOnTouchListener(new OnTouchListener() {
        @SuppressLint("ClickableViewAccessibility")
        @Override
        public boolean onTouch(View v, MotionEvent event) {
            if(event.getAction() == MotionEvent.ACTION_UP) {
                if(mEditTextSearch.getCompoundDrawables()[2]!=null){
                    if(event.getX() >= (mEditTextSearch.getRight()- mEditTextSearch.getLeft() - mEditTextSearch.getCompoundDrawables()[2].getBounds().width())) {
                        mEditTextSearch.setText("");
                    }
                }
            }
            return false;
        }
    });

我想建议一种方法绘制左侧! 我尝试了这个代码,并工作。

txtsearch.setOnTouchListener(new View.OnTouchListener() {
        @Override
        public boolean onTouch(View view, MotionEvent event) {
            final int DRAWABLE_LEFT = 0;
            int start=txtsearch.getSelectionStart();
            int end=txtsearch.getSelectionEnd();
            if(event.getAction() == MotionEvent.ACTION_UP) {
                if(event.getRawX() <= (txtsearch.getLeft() + txtsearch.getCompoundDrawables()[DRAWABLE_LEFT].getBounds().width())) {
                    //Do your action here
                    return true;
                }

            }
            return false;
        }
    });
}

按照下面的代码绘制右,左,上,下点击:

edittextview_confirmpassword.setOnTouchListener(new View.OnTouchListener() {
    @Override        public boolean onTouch(View v, MotionEvent event) {
        final int DRAWABLE_LEFT = 0;
        final int DRAWABLE_TOP = 1;
        final int DRAWABLE_RIGHT = 2;
        final int DRAWABLE_BOTTOM = 3;

        if(event.getAction() == MotionEvent.ACTION_UP) {
            if(event.getRawX() >= (edittextview_confirmpassword.getRight() - edittextview_confirmpassword.getCompoundDrawables()[DRAWABLE_RIGHT].getBounds().width())) {
                // your action here                    edittextview_confirmpassword.setInputType(InputType.TYPE_CLASS_TEXT | InputType.TYPE_TEXT_VARIATION_PASSWORD);
                return true;
            }
        }else{
            edittextview_confirmpassword.setInputType(InputType.TYPE_CLASS_TEXT | InputType.TYPE_TEXT_FLAG_NO_SUGGESTIONS);

        }
        return false;
    }
});

}

复合绘图不应该是可点击的。 在水平LinearLayout中使用单独的视图并在它们上使用单击处理程序会更干净。

<LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="15dp"
        android:background="@color/white"
        android:layout_marginLeft="20dp"
        android:layout_marginStart="20dp"
        android:layout_marginRight="20dp"
        android:layout_marginEnd="20dp"
        android:layout_gravity="center_horizontal"
        android:orientation="horizontal"
        android:translationZ="4dp">

        <ImageView
            android:layout_width="wrap_content"
            android:layout_height="match_parent"
            android:background="@color/white"
            android:minWidth="40dp"
            android:scaleType="center"
            app:srcCompat="@drawable/ic_search_map"/>

        <android.support.design.widget.TextInputEditText
            android:id="@+id/search_edit"
            style="@style/EditText.Registration.Map"
            android:layout_width="0dp"
            android:layout_weight="1"
            android:layout_height="wrap_content"
            android:hint="@string/hint_location_search"
            android:imeOptions="actionSearch"
            android:inputType="textPostalAddress"
            android:maxLines="1"
            android:minHeight="40dp" />

        <ImageView
            android:id="@+id/location_gps_refresh"
            android:layout_width="wrap_content"
            android:layout_height="match_parent"
            android:background="@color/white"
            android:minWidth="40dp"
            android:scaleType="center"
            app:srcCompat="@drawable/selector_ic_gps"/>
</LinearLayout>