CheckBox

自定义 CheckBox

主页面

package com.example.testjava1;

import android.os.Bundle;
import android.widget.TextView;

import androidx.appcompat.app.AppCompatActivity;

public class CheckBoxActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_check_box);

        MyCheckView checkTextView = findViewById(R.id.check);

        checkTextView.setOnClickListener(v->{
            checkTextView.setSTATUS(!checkTextView.getSTATUS());
        });
    }
}

主页面的 xml 布局文件面

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/main"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:gravity="center"
    android:orientation="vertical"
    tools:context=".CheckBoxActivity">

    <com.example.testjava1.MyCheckView
        android:layout_width="wrap_content"
        android:text="请勾选"
        android:id="@+id/check"
        android:textSize="30dp"
        android:layout_height="wrap_content"/>
</LinearLayout>

自定义的 checkbox 页面

package com.example.testjava1;

import android.content.Context;
import android.graphics.drawable.Drawable;
import android.util.AttributeSet;
import android.util.Log;

import androidx.annotation.Nullable;
import androidx.core.content.ContextCompat;

public class MyCheckView extends androidx.appcompat.widget.AppCompatTextView {

    private static final String TAG = "MyCheckView";

    private final Drawable unCheck;

    private final Drawable check;

    private Boolean STATUS = false;

    public MyCheckView(Context context, @Nullable AttributeSet attrs) {
        super(context, attrs);

        check = ContextCompat.getDrawable(context, R.mipmap.check);

        unCheck = ContextCompat.getDrawable(context, R.mipmap.uncheck);

        setCompoundDrawablesWithIntrinsicBounds(unCheck, null, null, null);
    }

    public void setSTATUS(Boolean STATUS) {
        this.STATUS = STATUS;

        Log.i(TAG, "setSTATUS: 设置状态");

        if (STATUS) {
            setCompoundDrawablesWithIntrinsicBounds(check, null, null, null);

            return;
        }

        setCompoundDrawablesWithIntrinsicBounds(unCheck, null, null, null);
    }

    public Boolean getSTATUS() {
        return STATUS;
    }
}

官方的 checkbox 页面的布局文件

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:gravity="center"
    android:orientation="vertical"
    tools:context=".MyCheckboxView">

    <CheckBox
        android:id="@+id/my_checkbox_view"
        android:checked="true"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="勾选，表示同意用户协议" />
</LinearLayout>

官方的 checkbox 页面 Click 的写法

package com.example.testjava1;

import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.Toast;

import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;

public class MyCheckboxView extends AppCompatActivity {
    private static final String TAG = "MyCheckboxView";

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_check_box_main);

        CheckBox checkBox = findViewById(R.id.my_checkbox_view);

       checkBox.setOnClickListener(v -> {
           boolean isChecked = checkBox.isChecked();
           Toast toast = Toast.makeText(MyCheckboxView.this, "当前状态：" + isChecked, Toast.LENGTH_SHORT);
           Log.d("CheckBox", "当前状态：" + isChecked);
           toast.show();
           if (isChecked) {
               checkBox.setChecked(true);
               return;
           }
           checkBox.setChecked(false);

       });
    }
}

官方的 checkbox 页面 监听 的写法1

package com.example.testjava1;

import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.Toast;

import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;

public class MyCheckboxView extends AppCompatActivity {
    private static final String TAG = "MyCheckboxView";

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_check_box_main);

        CheckBox checkBox = findViewById(R.id.my_checkbox_view);

        checkBox.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
            @Override
            public void onCheckedChanged(@NonNull CompoundButton buttonView, boolean isChecked) {
                CheckBox btnView1 = (CheckBox) buttonView;
                btnView1.isChecked();
                Toast toast = Toast.makeText(MyCheckboxView.this, "当前状态：" + isChecked, Toast.LENGTH_SHORT);
                toast.show();
            }
        });
    }
}

官方的 checkbox 页面 监听 的写法2

package com.example.testjava1;

import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.Toast;

import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;

public class MyCheckboxView extends AppCompatActivity {
    private static final String TAG = "MyCheckboxView";

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_check_box_main);

        CheckBox checkBox = findViewById(R.id.my_checkbox_view);

        checkBox.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
            @Override
            public void onCheckedChanged(@NonNull CompoundButton buttonView, boolean isChecked) {
                CheckBox btnView1 = (CheckBox) buttonView;
                boolean isChecked1 = btnView1.isChecked();
                Toast toast = Toast.makeText(MyCheckboxView.this, "当前状态：" + isChecked1, Toast.LENGTH_SHORT);
                toast.show();
            }
        });
    }
}