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Android 中ActionBar+fragment实现页面导航、KeyDown事件、自定义主题Style

代码敲到深夜 2022-03-17 阅读 83


为保证android2.0以上均能运行,使用support.v7库下的actionbar及fragment继承自AppCompatActivity(ActionBarActivity已过时)使用getSupportActionBar()得到ActionBar,​ActionBar.Tab​,这里Tab必须设置监听,在监听中实现Fragment的切换。

这里重点提一下,Theme主题一定要适配,因为我使用的是AppCompatActivity,后面自定义主题。

1、main.xml

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout 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"
tools:context=".MainActivity">
<FrameLayout
android:id="@+id/context"
android:layout_width="match_parent"
android:layout_height="match_parent"/>

</android.support.constraint.ConstraintLayout>


2、MainActivity

package com.example.call_aidl_for_rfid_as;

import android.os.Bundle;
import android.support.design.widget.FloatingActionButton;
import android.support.design.widget.Snackbar;
import android.support.v4.app.FragmentTransaction;
import android.support.v7.app.ActionBar;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.util.Log;
import android.view.KeyEvent;
import android.view.View;

public class Main2Activity extends AppCompatActivity {

ActionBar actionBar;
BaseFragment curFragment;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main2);

actionBar = getSupportActionBar();
actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);

ActionBar.Tab tab1 = actionBar.newTab();
tab1.setText("新业务Service");

tab1.setTabListener(new MyTabListener(new NewBusinessServiceFragment()));
ActionBar.Tab tab2 = actionBar.newTab().setText("盘点Service");
tab2.setTabListener(new MyTabListener(new InventoryServiceFragment()));
actionBar.addTab(tab1);
actionBar.addTab(tab2);
}



@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {return curFragment.onKeyDown(keyCode,event);
}

class MyTabListener implements ActionBar.TabListener{

private BaseFragment fragment;
public MyTabListener (BaseFragment fragment){
this.fragment=fragment;
}


@Override
public void onTabSelected(ActionBar.Tab tab, FragmentTransaction ft) {
curFragment = fragment;
ft.replace(R.id.context,fragment);
}

@Override
public void onTabUnselected(ActionBar.Tab tab, FragmentTransaction ft) {

}

@Override
public void onTabReselected(ActionBar.Tab tab, FragmentTransaction ft) {

}
}

@Override
protected void onDestroy() {

super.onDestroy();
}

}


3、BaseFragement.class   用于处理KeyDown事件

package com.example.rfid_sdk_as;
import android.support.v4.app.Fragment;
import android.util.Log;
import android.view.KeyEvent;

public class BaseFragment extends Fragment{

//这里的是我们的重点
public boolean onKeyDown(int keyCode, KeyEvent event){return false;
}
}


4、NewBusinessServiceFragment

public class NewBusinessServiceFragment extends BaseFragment {
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
return inflater.inflate(R.layout.fragment_fragment_new_business, container, false);
}

@Override
public void onActivityCreated(@Nullable Bundle savedInstanceState) {

super.onActivityCreated(savedInstanceState);
View view = getView();
context = view.getContext();

}

@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {

// TODO Auto-generated method stub
if (keyCode == 280 || keyCode == 139) {

}

return super.onKeyDown(keyCode, event);
}


}



5、InventoryServiceFragment

public class NewBusinessServiceFragment extends BaseFragment {
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
return inflater.inflate(R.layout.fragment_inventory, container, false);
}

@Override
public void onActivityCreated(@Nullable Bundle savedInstanceState) {

super.onActivityCreated(savedInstanceState);
View view = getView();
context = view.getContext();

}

@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {

// TODO Auto-generated method stub
if (keyCode == 280 || keyCode == 139) {

}

return super.onKeyDown(keyCode, event);
}


}


6、AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.rfid_sdk_as">

<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:roundIcon="@mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="@style/CustomActionBarTheme">

<activity android:name=".Main2Activity"
android:windowSoftInputMode="adjustPan">
<intent-filter>
<action android:name="android.intent.action.MAIN" />

<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>

<activity
android:name=".MainActivity"
android:windowSoftInputMode="adjustPan">
</activity>

</application>

</manifest>


7、配置CustomActionBarTheme主题,在values目录下的style.xml文件中添加如下:

<style name="CustomActionBarTheme" parent="@style/Theme.AppCompat.Light">
<item name="android:actionBarStyle">@style/MyActionBar</item>
<item name="android:actionBarDivider">@null</item>
<item name="android:actionBarTabTextStyle">@style/MyActionBarTabText</item>
<!-- <item name="android:actionBarTabStyle">@style/MyActionBarTabs</item> -->
<item name="android:actionBarTabBarStyle">@style/MyActionBarTabBars</item>
<item name="android:actionMenuTextColor">@android:color/holo_green_light</item>

<!-- Support library compatibility -->
<item name="actionBarStyle">@style/MyActionBar</item>
<item name="actionBarDivider">@null</item>
<item name="actionBarTabTextStyle">@style/MyActionBarTabText</item>
<!-- <item name="actionBarTabStyle">@style/MyActionBarTabs</item> -->
<item name="actionBarTabBarStyle">@style/MyActionBarTabBars</item>
<item name="actionMenuTextColor">@android:color/holo_green_light</item>
</style>

<!-- ActionBar styles -->
<style name="MyActionBar" parent="@style/Widget.AppCompat.ActionBar">
<!--<item name="android:background">@android:color/holo_orange_light</item>-->
<item name="android:titleTextStyle">@style/MyActionBarTitleText</item>
<item name="android:backgroundStacked">@color/colorWhite</item>

<!-- Support library compatibility -->
<item name="background">@color/colorPrimary</item>
<item name="titleTextStyle">@style/MyActionBarTitleText</item>
<item name="backgroundStacked">@color/colorWhite</item>
</style>

<!-- ActionBar title text -->
<style name="MyActionBarTitleText" parent="@style/TextAppearance.AppCompat.Widget.ActionBar.Title">
<item name="android:textColor">@color/colorWhite</item>
</style>

<!-- ActionBar tabs text -->
<style name="MyActionBarTabText" parent="@style/Widget.AppCompat.ActionBar.TabText">
<item name="android:textColor">@android:color/holo_blue_bright</item>
</style>

<style name="MyActionBarTabBars" parent="@style/Widget.AppCompat.ActionBar.TabBar">
<item name="android:showDividers">none</item>
</style>





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