我刚刚完成一个应用程序的调整,以适应新的v22.1.1支持和appcompat库,有关更多详细信息,请参见here和here。当我进行一些测试时,我使用的ActionModes出现了问题。
使用startSupportActionMode()
调用启动ActionMode时-使用现在不建议使用的ActionBarActivity基类还是新的AppCompatActivity基类都没有关系-不会调用onPrepareActionMode()
。
在包括v21.0.3和v22.0.0在内的早期版本中,最初使用onPrepareActionMode()
创建ActionMode时,会自动调用startSupportActionMode()
。
我在2.2、4.4.2和5.0的设备上进行了测试,因此它似乎与版本无关。
有人知道,如果这是预期的行为,则是在v22.1.1中引入的,或者是错误?
我找到了这个issue,但是这里没有很多反馈...
编辑2015年5月11日:
如Android issue tracker 159527中所述,此问题不仅影响appcompat的v22.1.x和支持库,还影响Android 5.1的实现。
目前有两种可能的临时解决方案,一种是通用的:
@Override
public ActionMode startSupportActionMode(final ActionMode.Callback callback) {
// Fix for bug https://code.google.com/p/android/issues/detail?id=159527
final ActionMode mode = super.startSupportActionMode(callback);
if (mode != null) {
mode.invalidate();
}
return mode;
}
和“快速而肮脏的”(当您实例化ActionMode时):
final ActionMode actionMode = startSupportActionMode(new MyActionMode());
if(actionMode != null) {
actionMode.invalidate();
}
如果您不使用appcompat(
ActionBarActivity
/ AppCompatActivity
),则需要将startSupportActionMode()
替换为startActionMode()
。不幸的是,目前尚不清楚这是新的行为还是错误。根据API doc的说法,它是错误/回归,但谁知道...
最佳答案
我创建了一个演示程序,它的工作原理很好,每次显示操作模式时都会调用onPrepareActionMode。总是在onCreateActionMode之后调用,但是
如果模式无效,可能会多次调用。
[
我要求任何人进行一次小修改。
我需要状态栏的颜色与工具栏的颜色相同,但是需要动态变化,
您会看到不必要的“抽屉布局”用于实现此效果。但是,如果我删除了“抽屉布局”,状态栏的颜色不会根据工具栏的颜色而改变。
在实用程序中,默认情况下您可以看到默认主题颜色为红色,工具栏最初为红色,而状态栏则为红色,并且仅当我删除了绘图仪布局时才如此。
我需要使用样式进行此操作。
]
创建资源布局并命名为=> action_mode_activity
<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/my_drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true">
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
android:orientation="vertical"
app:insetForeground="#4000">
<include
android:id="@+id/toolbar"
layout="@layout/toolbar" />
<EditText
android:id="@+id/editTextCopy"
android:layout_width="fill_parent"
android:layout_height="40dp"
android:layout_marginTop="19dp"
android:ems="10"
android:inputType="textMultiLine"
android:text="Long click to share!">
<requestFocus />
</EditText>
</LinearLayout>
</android.support.v4.widget.DrawerLayout>
创建一个名为ActionModeActivity的Activity
import android.os.Build;
import android.os.Bundle;
import android.support.v7.app.ActionBar;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.view.ActionMode;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.widget.EditText;
import android.widget.Toast;
import com.example.deepakpawar.demolearning.R;
import com.example.deepakpawar.demolearning.demo.load.recycler.Utils;
/**
* Created by Deepak Pawar on 9/24/2015.
*/
public class ActionModeActivity extends AppCompatActivity implements View.OnLongClickListener, ActionMode.Callback {
EditText editTextCopy;
android.view.ActionMode mActionMode;
private Toolbar toolbar;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Utils.onActivityCreateSetTheme(this);
setContentView(R.layout.action_mode_activity);
// 1. Get the editText
editTextCopy = (EditText) findViewById(R.id.editTextCopy);
// 2. add long-click listener
editTextCopy.setOnLongClickListener(this);
toolbar = (Toolbar) findViewById(R.id.toolbar);
if (toolbar != null) {
setSupportActionBar(toolbar);
ActionBar actionBar = getSupportActionBar();
actionBar.setDisplayHomeAsUpEnabled(true);
actionBar.setHomeButtonEnabled(true);
actionBar.setTitle("Android Students");
}
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
getWindow().getDecorView().setSystemUiVisibility(
View.SYSTEM_UI_FLAG_LAYOUT_STABLE
| View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN);
}
}
@Override
public boolean onLongClick(View view) {
// if actionmode is null "not started"
if (mActionMode != null) {
return false;
}
// Start the CAB
mActionMode = this.startActionMode(this);
view.setSelected(true);
return true;
}
// 4. Called when the action mode is created; startActionMode() was called
@Override
public boolean onCreateActionMode(android.view.ActionMode mode, Menu menu) {
// Inflate a menu resource providing context menu items
MenuInflater inflater = mode.getMenuInflater();
inflater.inflate(R.menu.action_menu, menu);
return true;
}
// 5. Called when the user click share item
@Override
public boolean onActionItemClicked(android.view.ActionMode mode, MenuItem item) {
switch (item.getItemId()) {
case R.id.action_share:
Toast.makeText(this, "Shared!", Toast.LENGTH_SHORT).show();
mode.finish(); // Action picked, so close the CAB
return true;
default:
return false;
}
}
// 6. Called each time the action mode is shown. Always called after onCreateActionMode, but
// may be called multiple times if the mode is invalidated.
@Override
public boolean onPrepareActionMode(android.view.ActionMode mode, Menu menu) {
Toast.makeText(ActionModeActivity.this,"onPrepareActionMode Called ",Toast.LENGTH_SHORT).show();
return false; // Return false if nothing is done
}
// 7. Called when the user exits the action mode
@Override
public void onDestroyActionMode(android.view.ActionMode mode) {
mActionMode = null;
}
}
//具有更改主题的方法的实用程序类
//我创建它是因为需要动态更改应用程序主题
导入android.app.Activity;
public class Utils {
private static int sTheme;
public final static int THEME_DEFAULT = 0;
public final static int THEME_WHITE = 1;
public final static int THEME_BLUE = 2;
/**
* Set the theme of the Activity, and restart it by creating a new Activity of the same type.
*/
public static int getsTheme() {
return sTheme;
}
public static void changeToTheme(Activity activity, int theme) {
sTheme = theme;
activity.recreate();
// activity.finish();
// activity.startActivity(new Intent(activity, activity.getClass()));
}
/**
* Set the theme of the activity, according to the configuration.
*/
public static void onActivityCreateSetTheme(Activity activity) {
switch (sTheme) {
default:
case THEME_DEFAULT:
activity.setTheme(R.style.FirstTheme);
break;
case THEME_WHITE:
activity.setTheme(R.style.SecondTheme);
break;
case THEME_BLUE:
activity.setTheme(R.style.Thirdheme);
break;
}
}
}
v21-themes.xml
<resources>
<style name="AppTheme" parent="AppTheme.Base">
<item name="android:windowContentTransitions">true</item>
<item name="android:windowAllowEnterTransitionOverlap">true</item>
<item name="android:windowAllowReturnTransitionOverlap">true</item>
<item name="android:windowSharedElementEnterTransition">@android:transition/move</item>
<item name="android:windowSharedElementExitTransition">@android:transition/move</item>
<item name="android:actionOverflowButtonStyle">@style/Widget.ActionButton.Overflow</item>
<!-- <item name="android:navigationBarColor">@color/PrimaryColor</item>-->
<item name="windowActionBar">false</item>
<item name="windowActionModeOverlay">true</item>
<!-- To Make Navigation Drawer Fill Status Bar and become Transparent Too -->
<item name="android:windowDrawsSystemBarBackgrounds">true</item>
<item name="android:statusBarColor">@android:color/transparent</item>
<!--//if darker status bar needed-->
<!-- <item name="android:windowTranslucentStatus">true</item>-->
</style>
<style name="AppTheme.Base" parent="Theme.AppCompat.Light.NoActionBar">
<!-- Customize your theme here. -->
<item name="colorPrimary">@color/PrimaryColor</item>
<item name="colorPrimaryDark">@color/PrimaryDarkColor</item>
<item name="colorAccent">@color/AccentColor</item>
<item name="android:textColorPrimary">@color/TextPrimaryColor</item>
<item name="android:windowBackground">@color/WindowBackground</item>
</style>
<style name="Widget.ActionButton.Overflow" parent="@android:style/Widget.Holo.ActionButton.Overflow">
<item name="android:contentDescription">@string/accessibility_overflow</item>
</style>
<!-- style for the tool bar backgrounds -->
<style name="ToolBarStyle" parent="ToolBarStyle.Base" />
<style name="ToolBarStyle.Base" parent="">
<item name="popupTheme">@style/ThemeOverlay.AppCompat.Light</item>
<item name="theme">@style/ThemeOverlay.AppCompat.Dark.ActionBar</item>
</style>
<style name="ToolBarStyle.Event" parent="ToolBarStyle">
<item name="titleTextAppearance">@style/TextAppearance.Widget.Event.Toolbar.Title</item>
</style>
<style name="TextAppearance.Widget.Event.Toolbar.Title" parent="TextAppearance.Widget.AppCompat.Toolbar.Title">
<!--Any text styling can be done here-->
<item name="android:textStyle">normal</item>
<item name="android:textSize">18sp</item>
<item name="android:textColor">#000000</item>
</style>
<!-- Customize your theme example here. -->
<style name="FirstTheme">
<item name="android:textColor">#FF0000</item>
<item name="colorPrimary">#FF0000</item>
<item name="colorPrimaryDark">#ff0000</item>
<item name="colorAccent">#ff0087</item>
<item name="android:shadowColor">#00ccff</item>
<item name="android:shadowRadius">1.5</item>
<item name="android:shadowDy">1</item>
</style>
<style name="SecondTheme">
<item name="android:textColor">#00FF00</item>
<item name="colorPrimary">#00FF00</item>
<item name="colorPrimaryDark">#00FF00</item>
<item name="colorAccent">#00FF90</item>
<item name="android:shadowColor">#00ccff</item>
<item name="android:shadowRadius">1.5</item>
<item name="android:shadowDy">1</item>
</style>
<style name="Thirdheme">
<item name="android:textColor">#0000F0</item>
<item name="colorPrimary">#0000F0</item>
<item name="colorPrimaryDark">#0000F0</item>
<item name="colorAccent">#0090F0</item>
<item name="android:shadowColor">#00ccff</item>
<item name="android:shadowRadius">1.5</item>
<item name="android:shadowDy">1</item>
</style>
<style name="AppCompatAlertDialogStyle" parent="Theme.AppCompat.Light.Dialog.Alert">
<item name="colorAccent">#FFCC00</item>
<item name="android:textColorPrimary">#FFFFFF</item>
<item name="android:background">#5fa3d0</item>
</style>
</resources>