操作栏未显示在主 Activity 中,而另一个 Activity 中存在相同的代码,并且另一个 Activity 操作栏溢出未按右上角的列表显示
- 图像 1:按下菜单键的主要 Activity
- 图像 2:显示消息 Activity
主要 Activity 代码:
public class MainActivity extends ActionBarActivity {
EditText t;
public final static String sendMessageextra="com.example.example2.textmessage";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
t=(EditText) findViewById(R.id.textmessage);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.activity_main_actions, menu);
return super.onCreateOptionsMenu(menu);
}
public void sendMessage(View v){
Intent sendmessageintent=new Intent(this,showMessage.class);
String messagestring=t.getText().toString();
sendmessageintent.putExtra(sendMessageextra, messagestring);
startActivity(sendmessageintent);
}
}
显示消息 Activity :
public class showMessage extends Activity{
TextView t;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.sendmessage);
t=(TextView) findViewById(R.id.showmessage);
showmessage();
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
super.onCreateOptionsMenu(menu);
MenuInflater inflater=getMenuInflater();
inflater.inflate(R.menu.activity_main_actions, menu);
return true;
}
public void showmessage(){
Intent intent=getIntent();
String message=intent.getStringExtra(MainActivity.sendMessageextra);
t.setText(message);
Log.i("Set New Text Box", "Text BOx");
}
}
Activity 主要actions.xml:
<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android" >
<!-- Search Widget -->
<item android:id="@+id/action_search"
android:icon="@drawable/ic_action_search"
android:title="@string/action_search"
android:showAsAction="ifRoom"
android:actionViewClass="android.widget.SearchView"/>
<!-- Location Found -->
<item android:id="@+id/action_location_found"
android:icon="@drawable/ic_action_location_found"
android:title="@string/action_location_found"
android:showAsAction="never" />
<!-- Help -->
<item android:id="@+id/action_help"
android:icon="@drawable/ic_action_help"
android:title="@string/action_help"
android:showAsAction="never"/>
</menu>
android 菜单文件: Activity list 文件:
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.example2"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="19" />
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme">
<activity
android:name=".MainActivity"
android:label="@string/app_name">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER"/>
</intent-filter>
</activity>
<activity
android:name="com.example.example2.showMessage"
android:label="Show Message" android:parentActivityName="com.example.example2.MainActivity"/>
</application>
</manifest>
最佳答案
如果您想在每个 Activity 的操作栏右侧显示搜索图标,则只需在 actions.xml 中进行更改,而不是将 android:showAsAction="ifRoom"更改为 android:showAsAction="always"
关于java - Android Activity 仅在主 Activity 中显示并且未正确显示,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/25781789/