java - 无法选中复选框

Question

我需要你的帮助来完成我的第一个 android 项目，我的目标是根据偏好设置复选框的状态，所以这是我尝试过的:

<CheckBox
    android:id="@+id/checkBoxfriendRequests"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:text="   Friend requests"
    android:textSize="23sp"
    android:gravity="center_vertical"
    android:onClick="onCheckboxClicked" />

.

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

     if (savedInstanceState == null) {
            // Add the fragment on initial activity setup
         faceFrag = new FacebookFragment();
            getSupportFragmentManager()
            .beginTransaction()
            .add(android.R.id.content, faceFrag)
            .commit();
        } else {
            // Or set the fragment from restored state info
            faceFrag = (FacebookFragment) getSupportFragmentManager()
            .findFragmentById(android.R.id.content);
        }

        ActionBar myActionBar = getSupportActionBar();
        myActionBar.setHomeButtonEnabled(false);

        getSupportActionBar().setDisplayOptions(ActionBar.DISPLAY_SHOW_CUSTOM); 
        getSupportActionBar().setCustomView(R.layout.abs_layout_face);



        // get view
        LayoutInflater layoutInflater = LayoutInflater.from(FacebookActivity.this);
        final View v = layoutInflater.inflate(R.layout.activity_facebook, null);

        // set sharedPrefernces editor
        facePrefs = this.getPreferences(MODE_PRIVATE);
        editor = getPreferences(MODE_PRIVATE).edit();

        // checkBoxfriendRequests status
        checkBoxfriendRequests = (CheckBox) v.findViewById(R.id.checkBoxfriendRequests);



        if(facePrefs.getBoolean("friendRequest", false)){
            checkBoxfriendRequests.setChecked(true);
            Log.d("sami","checkbox is cheked");
        }
        else{
            checkBoxfriendRequests.setChecked(false);
            Log.d("sami","checkbox is uncheked");
        }


}


 public void onCheckboxClicked(View view) {

        boolean checked = ((CheckBox) view).isChecked();

        // Check which checkbox was clicked
        switch(view.getId()) {
            case R.id.checkBoxfriendRequests :
                                    // add to preferences
                editor.putBoolean("friendRequest", checked );
                editor.commit();    
                if(checked) 
                    Log.d("sami", " checked true" );
                else
                    Log.d("sami", " checked false" );

                break;
        .....
    }

}

在创建 Activity 时，我可以在 LogCat 中看到该复选框已正确选中/未选中，但从视觉上看，无论首选项参数是什么，它始终未选中。

Answer 1

确保您没有意外禁用您的复选框:

checkbox.setEnabled(false);

当我打算将其设置为未选中时，这是我的错误:

checkbox.setChecked(false);