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[操作系统]andriod CheckBox


<??>  <LinearLayout android:orientation="vertical" android:layout_height="fill_parent" android:layout_width="fill_parent" ="http://schemas.android.com/apk/res/android">  <TextView android:layout_height="wrap_content" android:layout_width="fill_parent" android:text="多选控件:" android:id="@+id/label"/>  <CheckBox android:layout_height="wrap_content" android:layout_width="wrap_content" android:text="AA" android:id="@+id/plain_cb"/>  <CheckBox android:layout_height="wrap_content" android:layout_width="wrap_content" android:text="BB" android:id="@+id/serif_cb"/>  <CheckBox android:layout_height="wrap_content" android:layout_width="wrap_content" android:text="CC" android:id="@+id/bold_cb"/>  <CheckBox android:layout_height="wrap_content" android:layout_width="wrap_content" android:text="DD" android:id="@+id/italic_cb"/>  <Button android:layout_height="wrap_content" android:layout_width="wrap_content" android:text="获取checkbox" android:id="@+id/button1"/></LinearLayout>

package com.example.yanlei.mytk;import android.os.Bundle;import android.support.v7.app.AppCompatActivity;import android.text.method.HideReturnsTransformationMethod;import android.text.method.PasswordTransformationMethod;import android.view.Menu;import android.view.MenuItem;import android.view.View;import android.widget.Button;import android.widget.CheckBox;import android.widget.CompoundButton;import android.widget.CompoundButton.OnCheckedChangeListener;import android.widget.TextView;import android.widget.Toast;public class MainActivity extends AppCompatActivity {  private CheckBox plainCB;  private CheckBox serifCB;  private CheckBox boldCB;  private CheckBox italicCB;  private Button button1;  @Override  protected void onCreate(Bundle savedInstanceState) {    // TODO Auto-generated method stub    super.onCreate(savedInstanceState);    setContentView(R.layout.activity_main);    plainCB=(CheckBox)findViewById(R.id.plain_cb);    serifCB=(CheckBox)findViewById(R.id.serif_cb);    boldCB=(CheckBox)findViewById(R.id.bold_cb);    italicCB=(CheckBox)findViewById(R.id.italic_cb);    button1=(Button)findViewById(R.id.button1);    button1.setOnClickListener(new View.OnClickListener() {      @Override      public void onClick(View v) {        String result="";        if(plainCB.isChecked()){          result+=plainCB.getText()+"、";        }        if(serifCB.isChecked()){          result+=serifCB.getText()+"、";        }        if(boldCB.isChecked()){          result+=boldCB.getText()+"、";        }        if(italicCB.isChecked()){          result+=italicCB.getText()+"、";        }        if(!"".equals(result)){          result=result.substring(0,result.length()-1);        }else{          result="你没有选择!!!";        }        setTitle("Checked:"+result);      }    });  }}