android13打基础: 控件checkbox

测试checkbox的activity

// todo: 高级控件checkbox
public class Ch4_CheckBoxActivity extends AppCompatActivity
        implements CompoundButton.OnCheckedChangeListener {


    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_checkbox_ch4);
        CheckBox ck_system = findViewById(R.id.ch4_ck_system);
        CheckBox ck_custom = findViewById(R.id.ch4_ck_custom);

        ck_system.setOnCheckedChangeListener(this);
        ck_custom.setOnCheckedChangeListener(this);
    }

    @Override
    public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
        String desc = String.format("你%s了这个Checkbox", isChecked ? "勾选" : "取消勾选");
        buttonView.setText(desc);
    }

    // 定义一个勾选监听器
    private class CheckListener implements CompoundButton.OnCheckedChangeListener {
        // 在用户点击复选框时触发

        @Override
        public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
            String desc = String.format("您勾选了控件%d，状态为%b", buttonView.getId(), isChecked);
            // 在CheckBoxActivity中显示Toast，显示描述信息
            Toast.makeText(Ch4_CheckBoxActivity.this, desc, Toast.LENGTH_LONG).show();
        }
    }
}

布局文件

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

    <CheckBox
        android:id="@+id/ch4_ck_system"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:checked="false"
        android:padding="5dp"
        android:text="这是系统的checkbox"
        android:textColor="@color/black"
        android:textSize="17sp" />

    <CheckBox
        android:id="@+id/ch4_ck_custom"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:button="@mipmap/ic_launcher_round"
        android:checked="false"
        android:padding="5dp"
        android:text="这个checkbox换了图标"
        android:textColor="@color/black"
        android:textSize="17sp" />

</LinearLayout>

点击checkbox