对不起这个家伙。这必须像我不得不单独询问这个项目的第三个问题。 =（
我希望能够使用首选项活动中的复选框切换单选按钮的可见性。
我的代码中没有错误，两个活动都运行良好，但选中或取消选中复选框后，可见性没有变化。
这是我使用radiobuttons的活动
import android.app.Activity;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.view.View;
import android.widget.EditText;
import android.widget.RadioButton;
import com.medialets.android.analytics.MMAnalyticsManager;
public class Temperature extends Activity {
MMAnalyticsManager mManager;
private EditText text;
public void onStart(Bundle savedInstanceState){
super.onStart();
getPrefs();
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.temperature);
text = (EditText)findViewById(R.id.EditText01);
mManager = MMAnalyticsManager.sharedInstance(this);
mManager.start("codeHere", "1.0",
false);
}
@Override
public void onPause() {
super.onPause();
mManager.pause();
}
@Override
public void onResume() {
super.onResume();
mManager.resume();
}
@Override
public void onDestroy() {
super.onDestroy();
mManager.stop();
}
public void myClickHandler(View view){
switch (view.getId()) {
case R.id.Button01:
RadioButton celsiustokelvinButton = (RadioButton) findViewById (R.id.RadioButton05);
RadioButton celsiustofarenheitButton = (RadioButton) findViewById(R.id.RadioButton01);
RadioButton farenheittocelsiusButton = (RadioButton) findViewById(R.id.RadioButton02);
RadioButton farenheittokelvinButton = (RadioButton) findViewById(R.id.RadioButton06);
RadioButton kelvintocelsiusButton = (RadioButton) findViewById (R.id.RadioButton03);
RadioButton kelvintofarenheitButton=(RadioButton) findViewById (R.id.RadioButton04);
float inputValue = Float.parseFloat(text.getText().toString());
if (celsiustofarenheitButton.isChecked()) {
text.setText(String
.valueOf(convertCelsiusToFarenheit(inputValue)));
} if (farenheittocelsiusButton.isChecked()) {
text.setText(String
.valueOf(convertFarenheitToCelsius(inputValue)));
} if (celsiustokelvinButton.isChecked()) {
text.setText(String
.valueOf(convertCelsiusToKelvin(inputValue)));
} if (farenheittokelvinButton.isChecked()) {
text.setText(String
.valueOf(convertFarenheitToKelvin(inputValue)));
} if (kelvintocelsiusButton.isChecked()) {
text.setText(String
.valueOf(convertKelvinToCelsius(inputValue)));
} if (kelvintofarenheitButton.isChecked()) {
text.setText(String
.valueOf(convertKelvinToFarenheit(inputValue)));
}
break;
}}
private float convertFarenheitToCelsius(float fahrenheit){
return ((fahrenheit - 32) * 5 / 9);
}
private float convertCelsiusToFarenheit(float celsius){
return ((celsius * 9) / 5) + 32;
}
private double convertCelsiusToKelvin(float celsius){
return celsius + 273.15;
}
private double convertFarenheitToKelvin(float farenheit){
return ((farenheit-32)/(1.8));
}
private double convertKelvinToCelsius(float kelvin){
return kelvin-273.1;
}
private double convertKelvinToFarenheit(float kelvin){
return kelvin*1.8-459.67;
}
boolean CheckboxPreference;
private void getPrefs() {
// Get the xml/preferences.xml preferences
SharedPreferences prefs = PreferenceManager
.getDefaultSharedPreferences(getBaseContext());
CheckboxPreference = prefs.getBoolean("checkboxPref", true);
}
}
这是我的偏好活动
import android.app.Activity;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.preference.Preference;
import android.preference.PreferenceActivity;
import android.preference.Preference.OnPreferenceClickListener;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.RadioButton;
import android.widget.Toast;
import android.widget.CompoundButton.OnCheckedChangeListener;
public class Preferences extends PreferenceActivity {
private RadioButton btn01;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
addPreferencesFromResource(R.xml.preferences);
btn01 = (RadioButton)findViewById(R.id.RadioButton01);
Preference customPref = (Preference) findPreference("customPref");
customPref.setOnPreferenceClickListener(new OnPreferenceClickListener(){
public boolean onPreferenceClick(Preference preference) {
Toast.makeText(getBaseContext(),"The Custom Preference Has Been Clicked",Toast.LENGTH_LONG).show();
SharedPreferences customSharedPreference = getSharedPreferences("myCutomSharedPrefs", Activity.MODE_PRIVATE);
SharedPreferences.Editor editor = customSharedPreference.edit();
editor.putString("myCustomPref","The preference has been clicked");
editor.commit();
CheckBox();
return true;
}
private void CheckBox() {
final CheckBox ThisCheckBox = (CheckBox) findViewById (R.id.checkboxPref);
ThisCheckBox.setOnCheckedChangeListener(new OnCheckedChangeListener(){
@Override
public void onCheckedChanged(CompoundButton compoundButton,boolean test) {
if (ThisCheckBox.isChecked()){
btn01.setVisibility(View.VISIBLE);
} else {
btn01.setVisibility(View.GONE);
}
}
});
};
});
}}
很抱歉，还有其他内容，例如
中的分析插件任何人都知道为什么这不起作用
（只是旁注。当看到logcat时，单击复选框返回没有结果）
编辑：好的我刚刚按照建议修改了我的代码，但我担心首选项仍然不会影响任何内容。有人有什么想法？ =（