如何在android studio中为初学者添加一个操作栏? [英] How to add an actionbar in android studio for beginners?

问题描述

我想构建我自己的应用程序，我想向它添加一个操作栏.在我的主布局中，我只想要一个带有我的应用程序名称的操作栏.在我的其他布局/页面中，我想要我的页面名称和一个背面导航回上一页的导航符号.谁能告诉我如何做到这一点，也有人可以告诉我关于 android 中的默认操作栏它做什么以及我用它做什么.

I want to build my own app and i want to add an action bar to it.In my main layout i want an action bar with my app name only.In my other layouts/pages i want my page name and a back navigating symbol which navigates back to the previous page.Can anybody tell me how to do this and also can somebody tell me about the default actionbar in android what it does and what do i do with it.

推荐答案

STEP 1 : build.gradle (Application Level)

STEP 1 : build.gradle (Application Level)

dependencies {
    compile 'com.android.support:appcompat-v7:23.3.0'
}

第 2 步:AndroidManifest.xml

STEP 2 : AndroidManifest.xml

<application
....
android:theme="@style/Theme.AppCompat.Light.DarkActionBar"/>

第 3 步:在您的活动中

STEP 3 : In your activity

public class main extends AppCompatActivity
{
    ....
    @Override
    protected void onCreate(Bundle savedInstanceState) {

        ...

        getSupportActionBar().setTitle("Your Activity Title"); // for set actionbar title
        getSupportActionBar().setDisplayHomeAsUpEnabled(true); // for add back arrow in action bar
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
    // TODO Auto-generated method stub
    int id = item.getItemId();
    if (id == android.R.id.home) {
        finish();
    }
    return super.onOptionsItemSelected(item);
}

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