多选按钮CheckBox(对话框显示结果)
1.toast吐司打印显示结果
(1)Toast.makeText(MainActivity.this, str, Toast.LENGTH_LONG).show();
//1.显示的activity,2.显示内容,3.打印时间长短,4.调用show方法显示
(2)toast居中显示设置
Toast toast=Toast.makeText(getApplicationContext(),str,Toast.LENGTH_LONG);
toast.setGravity(Gravity.CENTER,0,0);
toast.show();
2.对话框显示结果
AlertDialog.Builder builder1= new AlertDialog.Builder(MainActivity.this); //实例化AlertDialog.Builder
builder1.setTitle(“业余爱好”); //对话框标题
builder1.setMessage(“您选择的业余爱好为:” + checked); //要显示的内容
builder1.show();
xml文件:
<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:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
android:orientation="vertical"
tools:context=".MainActivity">
<CheckBox
android:id="@+id/checkbox1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="跳舞"
android:textSize="20dp"/>
<CheckBox
android:id="@+id/checkbox2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="唱歌"
android:checked="true"
android:textSize="20dp"/>
<CheckBox
android:id="@+id/checkbox3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="睡觉"
android:checked="true"
android:textSize="20dp"/>
<Button
android:id="@+id/btn"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="显示结果"
android:textSize="20dp"/>
</LinearLayout>
java文件
package com.example.acer.checkbox;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.Toast;
public class MainActivity extends ActionBarActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Button btn= (Button) findViewById(R.id.btn);
final CheckBox checkbox1= (CheckBox) findViewById(R.id.checkbox1);
final CheckBox checkBox2= (CheckBox) findViewById(R.id.checkbox2);
final CheckBox checkBox3= (CheckBox) findViewById(R.id.checkbox3);
btn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
String checked="";
if (checkbox1.isChecked()){
checked += checkbox1.getText().toString();
//Toast.makeText(MainActivity.this, "您的业余爱好是"+checked,Toast.LENGTH_LONG).show();
}
if (checkBox2.isChecked()){
checked += checkBox2.getText().toString();
//Toast.makeText(MainActivity.this, "您的业余爱好是"+checked,Toast.LENGTH_LONG).show();
}
if (checkBox2.isChecked()){
checked += checkBox3.getText().toString();
//Toast.makeText(MainActivity.this, "您的业余爱好是"+checked,Toast.LENGTH_LONG).show();
}
AlertDialog.Builder builder1= new AlertDialog.Builder(MainActivity.this);
builder1.setTitle("业余爱好");
builder1.setMessage("您选择的业余爱好为:" + checked);
builder1.show();
}
});
}
}