Android CheckBox 的使用案例分析

複製代碼 代碼如下:public class MainActivity extends Activity {
TextView tv;
CheckBox cb1;
CheckBox cb2;

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

cb1 = (CheckBox) findViewById(R.id.checkbox1);
cb2 = (CheckBox) findViewById(R.id.checkbox2);
tv = (TextView) findViewById(R.id.textview1);

cb1.setOnCheckedChangeListener(cb);
cb2.setOnCheckedChangeListener(cb);
}

private CheckBox.OnCheckedChangeListener cb = new CheckBox.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
String stv = getString(R.string.hoby);
String scb1 = getString(R.string.basketball);
String scb2 = getString(R.string.football);
if (cb1.isChecked() && cb2.isChecked()) {
tv.setText(stv + ":" + scb1 + "&&" + scb2);
} else if (cb1.isChecked() && !cb2.isChecked()) {
tv.setText(stv + ":" + scb1);
} else if (!cb1.isChecked() && cb2.isChecked()) {
tv.setText(stv + ":" + scb2);
} else {
tv.setText(stv);
}
}
};

如下是布局檔案:
複製代碼 代碼如下:<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

android:layout_width="match_parent"

android:layout_height="match_parent"

android:orientation="vertical" >

<TextView

android:id="@+id/textview1"

android:layout_width="fill_parent"

android:layout_height="wrap_content"

android:text="@string/hoby" />

<CheckBox

android:id="@+id/checkbox1"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="@string/basketball" />

<CheckBox

android:id="@+id/checkbox2"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="@string/football" />

</LinearLayout>