本文仅为个人的处理方式，希望能对您有所帮助，欢迎各位留言指正，抱拳了
1、text.xml示例：
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#ccc">
<EditText
android:id="@+id/input"
android:layout_width="@dimen/dimen_270"
android:layout_height="wrap_content"
android:maxLines="1"
android:hint="请输入内容"
android:textSize="@dimen/dimen_16"
android:textColor="@color/color_fff"
android:layout_marginTop="@dimen/dimen_10" />
<ImageView
android:id="@+id/del"
android:layout_width="@dimen/dimen_14"
android:layout_height="@dimen/dimen_14"
android:visibility="gone"
android:layout_marginTop="@dimen/dimen_28"
android:src="@mipmap/bonus_envelope_cancel_icon_normal"
android:layout_toRightOf="@id/input"/>
</RelativeLayout>
2.textActivity.java示例：
public class textActivity extends Activity implements View.OnClickListener {
private EditText input;
private ImageView inputDel; //实例化一键清除输入内容
@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.text);
initView();
initListener();
}
//对变量进行初始化
private void initView(){
inputDel = findViewById(R.id.del);
input = findViewById(R.id.input);
}
//设置监听器
private void initListener(){
input.addTextChangedListener(textWatcher);
inputDel.setOnClickListener(this);
}
private TextWatcher textWatcher = 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) {
}
@Override
public void afterTextChanged(Editable s) {
if (input.getEditableText().length() >= 1){
inputDel.setVisibility(View.VISIBLE);
} else{
inputDel.setVisibility(View.GONE);
}
}
};
//点击事件（清空）
@Override
public void onClick(View v) {
switch (v.getId()){
case R.id.del:
input.setText("");
break;
}
}
}
3、在AndroidManifest.xml中进行注册：
<activity android:name=".textActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
4、效果图如下：
动图展示：