每日日报 20210119

Posted 2021-06-21 涛浪浪i

今天学习了RadioButton(单选按钮)&Checkbox(复选框)

 

 

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/LinearLayout1"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context=".MainActivity" >

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="请选择性别"
        android:textSize="23dp"
        />

    <RadioGroup
        android:id="@+id/radioGroup"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:orientation="horizontal">

        <RadioButton
            android:id="@+id/btnMan"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="男"
            android:checked="true"/>

        <RadioButton
            android:id="@+id/btnWoman"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="女"/>
    </RadioGroup>

    <Button
        android:id="@+id/btnpost"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="提交"/>

</LinearLayout>



复选框

 

 

public class MainActivity extends AppCompatActivity implements View.OnClickListener,CompoundButton.OnCheckedChangeListener{

    private CheckBox cb_one;
    private CheckBox cb_two;
    private CheckBox cb_three;
    private Button btn_send;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        cb_one = (CheckBox) findViewById(R.id.cb_one);
        cb_two = (CheckBox) findViewById(R.id.cb_two);
        cb_three = (CheckBox) findViewById(R.id.cb_three);
        btn_send = (Button) findViewById(R.id.btn_send);

        cb_one.setOnCheckedChangeListener(this);
        cb_two.setOnCheckedChangeListener(this);
        cb_three.setOnCheckedChangeListener(this);
        btn_send.setOnClickListener(this);

    }

    @Override
    public void onCheckedChanged(CompoundButton compoundButton, boolean b) {
       if(compoundButton.isChecked()) Toast.makeText(this,compoundButton.getText().toString(),Toast.LENGTH_SHORT).show();
    }

    @Override
    public void onClick(View view) {
        String choose = "";
        if(cb_one.isChecked())choose += cb_one.getText().toString() + "";
        if(cb_two.isChecked())choose += cb_two.getText().toString() + "";
        if(cb_three.isChecked())choose += cb_three.getText().toString() + "";
        Toast.makeText(this,choose,Toast.LENGTH_SHORT).show();
    }
}