我经历了How to add toolbars to AppCompatPreferenceActivity?
我正在使用appcompat-v7:23.0.1
和support-v4:23.0.1
在使用AppCompayPreferenceActivity
之前,我的PreferenceActivity
会在没有工具栏的情况下显示以下内容。
public class JStockPreferenceActivity extends PreferenceActivity {
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if (savedInstanceState == null) {
// Display the fragment as the main content.
JStockPreferenceFragment jStockPreferenceFragment = JStockPreferenceFragment.newInstance();
jStockPreferenceFragment.setArguments(this.getIntent().getExtras());
this.getFragmentManager().beginTransaction().replace(android.R.id.content, jStockPreferenceFragment).commit();
}
}
使用AppCompayPreferenceActivity
和一些Toolbar
初始化代码后,结果如下所示
结果与预期不符: -
Toolbar
与PreferenceFragment
Toolbar
时,PreferenceFragment
将使用该事件。这意味着,当您触摸工具栏时,将触摸“表格标题”首选项。public class JStockPreferenceActivity extends AppCompatPreferenceActivity {
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if (savedInstanceState == null) {
// Display the fragment as the main content.
JStockPreferenceFragment jStockPreferenceFragment = JStockPreferenceFragment.newInstance();
jStockPreferenceFragment.setArguments(this.getIntent().getExtras());
this.getFragmentManager().beginTransaction().replace(android.R.id.content, jStockPreferenceFragment).commit();
}
initToolbar();
}
private void initToolbar() {
Toolbar toolbar;
if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.ICE_CREAM_SANDWICH) {
ViewGroup root = (ViewGroup) findViewById(android.R.id.list).getParent().getParent().getParent();
toolbar = (Toolbar) LayoutInflater.from(this).inflate(R.layout.toolbar, root, false);
root.addView(toolbar, 0);
} else {
toolbar = null;
}
setSupportActionBar(toolbar);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
}
}
我的工具栏是
<android.support.v7.widget.Toolbar xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="@+id/toolbar"
android:layout_height="wrap_content"
android:layout_width="match_parent"
android:minHeight="?attr/actionBarSize"
android:background="?attr/colorPrimary"
android:elevation="4dp"
app:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"
app:popupTheme="@style/ThemeOverlay.AppCompat.Light" >
<!-- android:elevation="4dp" is used due to http://www.google.com/design/spec/what-is-material/elevation-shadows.html#elevation-shadows-elevation-android- -->
</android.support.v7.widget.Toolbar>
我在想,我做错了什么,导致Toolbar
与PreferenceFragment
重叠
答案 0 :(得分:3)
经过一些研究并从Ian Lake获得建议后,我设法通过
使其工作AppCompatPreferenceActivity
更改为AppCompatActivity
+ PreferenceFragmentCompat
以下解决方案适用于API 10及更高版本。
public class JStockPreferenceActivity extends AppCompatActivity {
@SuppressWarnings("deprecation")
@SuppressLint("NewApi")
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.jstock_preference_activity);
initToolbar();
if (savedInstanceState == null) {
// Display the fragment as the main content.
JStockPreferenceFragment jStockPreferenceFragment = JStockPreferenceFragment.newInstance();
jStockPreferenceFragment.setArguments(this.getIntent().getExtras());
this.getSupportFragmentManager().beginTransaction().replace(R.id.content, jStockPreferenceFragment).commit();
}
}
public class JStockPreferenceFragment extends PreferenceFragmentCompat implements SharedPreferences.OnSharedPreferenceChangeListener, PreferenceFragmentCompat.OnPreferenceDisplayDialogCallback {
public static JStockPreferenceFragment newInstance() {
return new JStockPreferenceFragment();
}
但是,这样做有一个缺点。您以前的自定义DialogPreference
不再有效。要解决这个问题,你需要
DialogPreference
替换为PreferenceDialogFragmentCompat
。DialogPreference
替换为ListPreference
。 (我不确定ListPreference
替换是否是正确的方法。无论如何都可行。)PreferenceDialogFragmentCompat
的{{1}}中手动显示PreferenceFragmentCompat
。onPreferenceDisplayDialog
public class JStockPreferenceFragment extends PreferenceFragmentCompat implements SharedPreferences.OnSharedPreferenceChangeListener, PreferenceFragmentCompat.OnPreferenceDisplayDialogCallback {
public static JStockPreferenceFragment newInstance() {
return new JStockPreferenceFragment();
}
////////////////////////////////////////////////////////////////////////////////////////////////
// Showing custom dialog preference.
private void showPreferenceDialogFragmentCompat(PreferenceDialogFragmentCompat preferenceDialogFragmentCompat) {
preferenceDialogFragmentCompat.setTargetFragment(this, 0);
preferenceDialogFragmentCompat.show(this.getFragmentManager(), "android.support.v7.preference.PreferenceFragment.DIALOG");
}
private void showCurrencySymbolPreferenceDialogFragmentCompat(Preference preference) {
CurrencySymbolPreferenceDialogFragmentCompat currencySymbolPreferenceDialogFragmentCompat = CurrencySymbolPreferenceDialogFragmentCompat.newInstance(preference.getKey());
showPreferenceDialogFragmentCompat(currencySymbolPreferenceDialogFragmentCompat);
}
// Showing custom dialog preference.
////////////////////////////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////////////////////////////
// Callback when we are using custom dialog preference.
@Override
public Fragment getCallbackFragment() {
return this;
}
@Override
public boolean onPreferenceDisplayDialog(PreferenceFragmentCompat preferenceFragmentCompat, Preference preference) {
final String key = preference.getKey();
if (_CURRENCY_SYMBOL_OPTIONS.equals(key)) {
showCurrencySymbolPreferenceDialogFragmentCompat(preference);
return true;
}
return false;
}
// Callback when we are using custom dialog preference.
////////////////////////////////////////////////////////////////////////////////////////////////
public class CurrencySymbolPreferenceDialogFragmentCompat extends PreferenceDialogFragmentCompat {
public CurrencySymbolPreferenceDialogFragmentCompat() {
}
public static CurrencySymbolPreferenceDialogFragmentCompat newInstance(String key) {
CurrencySymbolPreferenceDialogFragmentCompat fragment = new CurrencySymbolPreferenceDialogFragmentCompat();
Bundle b = new Bundle(1);
b.putString("key", key);
fragment.setArguments(b);
return fragment;
}
@Override
public void onDialogClosed(boolean positiveResult) {
if (positiveResult) {
...
this.getPreference().setSummary(getSummary());
...
}
}
}
请注意,您需要在主题中添加以下项目。
<android.support.v7.preference.ListPreference
android:title="@string/preference_currency_symbol_title"
android:key="_CURRENCY_SYMBOL_OPTIONS" />
然而,主题还不完美 - PreferenceFragmentCompat requires preferenceTheme to be set
这是一个已知问题:https://code.google.com/p/android/issues/detail?id=183376
建议的解决方法https://stackoverflow.com/a/32108439/72437但是,解决方法仅适用于v14及更高版本,而不适用于v7及更高版本。