Android不使用theme颜色,输入android:theme="@android:style/Theme.Black.NoTitleBar.Fullscreen"背景颜色没有变黑。并且用真机测试...

源自：21-1 设置文本框样式

输入android:theme="@android:style/Theme.Black.NoTitleBar.Fullscreen"背景颜色没有变黑。并且用真机测试，无法运行

看了评论下面的留言，我把extends ActionBarActivity改为Activity就会报错，也是运行不了。求解如何才能使背景颜色变黑并且能在真机运行。

代码：

package com.example.mycalculator;

import android.support.v7.app.ActionBarActivity;

import android.support.v7.app.ActionBar;

import android.support.v4.app.Fragment;

import android.os.Bundle;

import android.view.LayoutInflater;

import android.view.Menu;

import android.view.MenuItem;

import android.view.View;

import android.view.ViewGroup;

import android.os.Build;

public class MainActivity extends ActionBarActivity {

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

}

@Override

public boolean onCreateOptionsMenu(Menu menu) {

// Inflate the menu; this adds items to the action bar if it is present.

getMenuInflater().inflate(R.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();

if (id == R.id.action_settings) {

return true;

}

return super.onOptionsItemSelected(item);

}

/**

* A placeholder fragment containing a simple view.

*/

public static class PlaceholderFragment extends Fragment {

public PlaceholderFragment() {

}

@Override

public View onCreateView(LayoutInflater inflater, ViewGroup container,

Bundle savedInstanceState) {

View rootView = inflater.inflate(R.layout.fragment_main, container, false);

return rootView;

}

}

}

提问者：百年孤獨

2015-08-17 20:22