Android自定义view实现输入框效果

本文实例为大家分享了Android自定义view实现输入框的具体代码，供大家参考，具体内容如下

自定义输入框的View

package com.fenghongzhang.day017;

import android.content.Context;
import android.content.res.TypedArray;
import android.text.InputType;
import android.util.AttributeSet;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.LinearLayout;

import androidx.annotation.NonNull;
import androidx.annotation.Nullable;

public class InputView extends LinearLayout {
  private int inputview_input_icon;
  private String inputview_input_hint;
  private boolean inputview_is_pass;
  private View inflate;
  ImageView imageView;
  EditText editText;

  public InputView(@NonNull Context context) {
    super(context);
  }

  public InputView(@NonNull Context context, @Nullable AttributeSet attrs) {
    super(context, attrs);
    init(context,attrs);
  }


  public void init(Context context,AttributeSet attr){
    if(attr==null){
      return;
    }
    TypedArray typedArray = context.obtainStyledAttributes(attr, R.styleable.InputView);
    inputview_input_icon = typedArray.getResourceId(R.styleable.InputView_input_icon, R.mipmap.ic_launcher);
    inputview_input_hint = typedArray.getString(R.styleable.InputView_input_hint);
    inputview_is_pass = typedArray.getBoolean(R.styleable.InputView_is_pass, false);
    //释放资源
    typedArray.recycle();

    //加载.
    inflate = LayoutInflater.from(context).inflate(R.layout.inputview, this, false);
    imageView= (ImageView)inflate.findViewById(R.id.icon);
    editText= (EditText)inflate.findViewById(R.id.text);
    
    imageView.setImageResource(inputview_input_icon);
    editText.setText(inputview_input_hint);
    //设置样式,是不是密文格式,可以没有.
    editText.setInputType(inputview_is_pass? InputType.TYPE_CLASS_TEXT|InputType.TYPE_TEXT_VARIATION_PASSWORD:InputType.TYPE_CLASS_PHONE);
    
    //添加到viewgroup中
    addView(inflate);
  }

  //用来取到输入框的值.
  public String getString(){
    return editText.getText().toString().trim();
  }

}

输入框的布局

<?xml version=\"1.0\" encoding=\"utf-8\"?>
<LinearLayout
  xmlns:android=\"http://schemas.android.com/apk/res/android\"
  android:layout_width=\"300dp\"
  android:orientation=\"horizontal\"
  android:layout_height=\"50dp\"
  android:background=\"@drawable/back_color\"
  android:layout_gravity=\"center_vertical\"
  >
  <ImageView
    android:layout_width=\"wrap_content\"
    android:layout_height=\"wrap_content\"
    android:src=\"@mipmap/ic_launcher\"
    android:layout_gravity=\"center_vertical\"
    android:id=\"@+id/icon\"
    />

  <EditText
    android:layout_marginLeft=\"30dp\"
    android:layout_width=\"match_parent\"
    android:layout_height=\"wrap_content\"
    android:layout_gravity=\"center_vertical\"
    android:hint=\"username\"
    android:textSize=\"30dp\"
    android:background=\"@null\"
    android:id=\"@+id/text\"
    />
</LinearLayout>

属性文件

<?xml version=\"1.0\" encoding=\"utf-8\"?>
<resources>
  <declare-styleable name=\"InputView\">
    <!--图片-->
    <attr name=\"input_icon\" format=\"reference\"></attr>
    <!--字体-->
    <attr name=\"input_hint\" format=\"string\"></attr>
    <!--是否密文-->
    <attr name=\"is_pass\" format=\"boolean\"></attr>
  </declare-styleable>
  
</resources>

布局中引用

<?xml version=\"1.0\" encoding=\"utf-8\"?>
<LinearLayout xmlns:android=\"http://schemas.android.com/apk/res/android\"
  xmlns:my=\"http://schemas.android.com/apk/res-auto\"
  xmlns:tools=\"http://schemas.android.com/tools\"
  android:layout_width=\"match_parent\"
  android:layout_height=\"match_parent\"
  tools:context=\".Main3Activity\">
  
  <com.fenghongzhang.day017.InputView
    android:layout_width=\"300dp\"
    android:layout_height=\"50dp\"
    my:input_icon=\"@mipmap/ic_launcher\"
    my:input_hint=\"手机号\"
    my:is_pass=\"true\"
    >
  </com.fenghongzhang.day017.InputView>

</LinearLayout>

输入框圆角背景

<?xml version=\"1.0\" encoding=\"utf-8\"?>
<shape xmlns:android=\"http://schemas.android.com/apk/res/android\">
  
  <corners android:radius=\"10dp\" ></corners>
  <size android:width=\"100dp\" android:height=\"30dp\"></size>
  <solid android:color=\"@color/colorAccent\"></solid>
</shape>

效果