嗨,我是Android和Java的新手,遇到了问题.我的问题是我试图将PreferenceScreen添加到线性布局中,以便能够在res / layout / activity_main.xml中的搜索栏中设置setOnSeekBarChangeListener().目前,PreferenceScreen和LinearLayout已添加到视图中,但它们彼此重叠,这不是我想要的.相反,我希望PreferenceScreen可以代替布局文件中的ListView.

res / xml / settings.xml

android:title="Category"

android:key="category_preference">

android:key="switch_preference"

android:title="Title"

android:summary="Summary"

android:defaultValue="true" />

android:key="checkbox_preference"

android:title="Title"

android:summary="Summary"

android:defaultValue="true" />

RES /布局/activity_main.xml

xmlns:tools="http://schemas.android.com/tools"

android:layout_width="fill_parent"

android:orientation="vertical"

android:layout_height="fill_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"

tools:context=".MainActivity" >

android:id="@+id/main_seek_bar"

android:layout_width="fill_parent"

android:layout_height="wrap_content" />

android:layout_width="fill_parent"

android:layout_height="fill_parent" />

MainActivity.java

public class MainActivity extends Activity {

@Override

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

getFragmentManager().beginTransaction().replace(android.R.id.content, new SettingsFragment()).commit();

setContentView(R.layout.activity_main);

SeekBar seekBar = (SeekBar) findViewById(R.id.main_seek_bar);

seekBar.setOnTouchListener(new SeekBar.OnTouchListener() {

@Override

public boolean onTouch(View arg0, MotionEvent arg1) {

// TODO Auto-generated method stub

return false;

}

});

}

public static class SettingsFragment extends PreferenceFragment implements OnSharedPreferenceChangeListener {

public static final String KEY_PREF_SYNC_CONN = "pref_syncConnectionType";

@Override

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

addPreferencesFromResource(R.xml.settings);

onSharedPreferenceChanged(null, "");

}

@Override

public void onResume() {

super.onResume();

getPreferenceScreen().getSharedPreferences().registerOnSharedPreferenceChangeListener(this);

}

@Override

public void onPause() {

super.onPause();

getPreferenceScreen().getSharedPreferences().unregisterOnSharedPreferenceChangeListener(this);

}

@Override

public void onSharedPreferenceChanged(SharedPreferences sharedPreferences, String key) {

if (key.equals("switch_preference")) {

Toast.makeText(getActivity(), "Switch", Toast.LENGTH_LONG).show();

}

}

}

}

解决方法:

在您的res / layout / activity_main.xml文件中进行更改

android:layout_width="fill_parent"

android:layout_height="fill_parent" />

至

android:layout_width="fill_parent"

android:name="yourpackagename.MainActivity$SettingsFragment"

android:layout_height="fill_parent" />

然后在您的MainActivity.java文件中删除以下行

getFragmentManager().beginTransaction().replace(android.R.id.content, new SettingsFragment()).commit();

标签：android-layout,xml,java,android

来源： https://codeday.me/bug/20191122/2058094.html