我正在编写简单的教程应用程序,由于某些原因我的应用程序图标没有显示(我想用它作为导航向上按钮而不是箭头)。
正如在主题中所述,我想在Api级别11上进行,但是我发现的所有解决方案都依赖于setIcon方法。
getActionBar().setIcon(R.drawable.ic_launcher); //only on API >= 14
Android studio 1.0.2中的片段预览确实显示了图标,但是模拟器没有,所以我希望资源是可以的。此外,搜索和删除图标就像一个魅力。我已经尝试将它设置为Icon和徽标都无济于事。
的AndroidManifest.xml:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.yamba"
android:versionCode="1"
android:versionName="1.0"
>
<uses-permission android:name="android.permission.INTERNET"/>
<uses-sdk
android:minSdkVersion="11"
android:targetSdkVersion="21"/>
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/Theme.AppCompat.Light"
android:logo="@drawable/ic_launcher"
>
<activity
android:parentActivityName=".MainActivity"
android:name=".StatusActivity"
android:label="@string/app_name" >
</activity>
<!--- The labe is what's displayed at the taskbar!-->
<activity
android:parentActivityName=".MainActivity"
android:name=".SettingsActivity"
android:label="@string/title_activity_settings" >
</activity>
<activity
android:name=".MainActivity"
android:label="@string/title_activity_main" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
activity_settings.xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"
android:layout_height="match_parent" android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
android:paddingBottom="@dimen/activity_vertical_margin"
tools:context="com.example.yamba.SettingsActivity">
<TextView android:text=""
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
</RelativeLayout>
menu_settings.xml
<menu 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"
tools:context="com.example.yamba.SettingsActivity">
<item android:id="@+id/action_settings" android:title="@string/action_settings"
android:orderInCategory="100" app:showAsAction="never" />
</menu>
SettingsActivity.java
package com.example.yamba;
import android.annotation.TargetApi;
import android.app.Activity;
import android.content.Intent;
import android.os.Build;
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
public class SettingsActivity extends ActionBarActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if (savedInstanceState == null){
SettingsFragment fragment = new SettingsFragment();
getFragmentManager().beginTransaction().add(android.R.id.content, fragment, fragment.getClass().getSimpleName()).commit();
setContentView(R.layout.activity_settings);
// getSupportActionBar().setDefaultDisplayHomeAsUpEnabled(true);
// only for API>=14
// getActionBar().setDisplayShowHomeEnabled(true);
// getActionBar().setIcon(R.drawable.ic_launcher);
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
// getMenuInflater().inflate(R.menu.menu_settings, menu);
// return true;
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
switch(id){
case R.id.action_settings:
startActivity(new Intent(this, SettingsActivity.class));
return true;
case R.id.action_tweet:
startActivity(new Intent(this, com.example.yamba.StatusActivity.class));
return true;
default:
return false;
}
}
}
SettingsFragment.java
package com.example.yamba;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.preference.PreferenceFragment;
import android.preference.PreferenceManager;
/**
* Created by me on 19-01-2015.
*/
public class SettingsFragment extends PreferenceFragment implements SharedPreferences.OnSharedPreferenceChangeListener {
private SharedPreferences prefs;
@Override
public void onCreate(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
addPreferencesFromResource(R.xml.settings);
}
public void onStart(){
super.onStart();
prefs= PreferenceManager.getDefaultSharedPreferences(getActivity());
prefs.registerOnSharedPreferenceChangeListener(this);
}
@Override
public void onSharedPreferenceChanged(SharedPreferences sharedPreferences, String key) {
}
}
我偶然发现我可能能够根据现有样式之一定义自定义样式,但无法弄清楚如何处理它。
如果您需要任何其他文件,请告诉我并感谢您的时间。
答案 0 :(得分:1)
因为它是API 11 .. 你尝试使用支持库吗? 尝试切换
getActionBar().setIcon(R.drawable.ic_launcher);
with:
getSupportActionBar().setIcon(R.drawable.ic_launcher);
告诉我它是否有效,我们会从那里继续:)