如何在 Android 应用程序中为整个屏幕添加边框?
How to put borders to the entire screen in the Android application?
我希望能够在我的应用程序的整个屏幕上放置边框,如下所示:
这怎么可能实现?
已更新示例(API 21 岁或以上):
第 1 步:
按如下方式在您的可绘制资源中创建边框 xml,
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item><layer-list>
<item>
<shape>
<stroke android:width="4dp" android:color="#FF3B3B"/>
<solid android:color="@android:color/transparent"/>
</shape>
</item>
</layer-list>
</item>
</selector>
第 2 步:
修改activity中的主题styles.xml设置状态栏颜色为透明如下,
<style name="AppTheme" parent="Theme.AppCompat.NoActionBar">
<!-- Customize your theme here. -->
<item name="colorPrimary">@color/colorPrimary</item>
<item name="colorPrimaryDark">@color/colorPrimaryDark</item>
<item name="colorAccent">@color/colorAccent</item>
<item name="android:statusBarColor">@android:color/transparent</item>
</style>
第 3 步:
为您的 activity xml 使用自定义工具栏,
<?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"
android:background="@drawable/border"
tools:context=".MainActivity">
<android.support.v7.widget.Toolbar
android:id="@+id/toolbar"
android:layout_width="match_parent"
android:layout_marginRight="4dp"
android:layout_marginStart="4dp"
android:layout_marginLeft="4dp"
android:layout_marginEnd="4dp"
android:layout_marginTop="4dp"
app:layout_constraintTop_toTopOf="parent"
app:contentInsetLeft="0dp"
app:contentInsetStart="0dp"
app:contentInsetRight="0dp"
app:contentInsetEnd="0dp"
android:layout_height="wrap_content">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@color/colorPrimary"
android:orientation="vertical">
<ImageView
android:background="@color/colorPrimaryDark"
android:layout_width="match_parent"
android:layout_height="24dp" />
<TextView
android:text="@string/app_name"
android:textStyle="bold"
android:textSize="16sp"
android:textColor="#FFF"
android:gravity="center_vertical"
android:layout_width="match_parent"
android:layout_marginStart="16dp"
android:layout_height="?attr/actionBarSize" />
</LinearLayout>
</android.support.v7.widget.Toolbar>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Hello World!"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent" />
</android.support.constraint.ConstraintLayout>
第 4 步:
最后,在您的 onCreateMethod 活动中,
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
getWindow().getDecorView().setSystemUiVisibility(
View.SYSTEM_UI_FLAG_LAYOUT_STABLE
| View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN);
}
这是一个示例输出:
我希望能够在我的应用程序的整个屏幕上放置边框,如下所示:
已更新示例(API 21 岁或以上):
第 1 步:
按如下方式在您的可绘制资源中创建边框 xml,
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item><layer-list>
<item>
<shape>
<stroke android:width="4dp" android:color="#FF3B3B"/>
<solid android:color="@android:color/transparent"/>
</shape>
</item>
</layer-list>
</item>
</selector>
第 2 步:
修改activity中的主题styles.xml设置状态栏颜色为透明如下,
<style name="AppTheme" parent="Theme.AppCompat.NoActionBar">
<!-- Customize your theme here. -->
<item name="colorPrimary">@color/colorPrimary</item>
<item name="colorPrimaryDark">@color/colorPrimaryDark</item>
<item name="colorAccent">@color/colorAccent</item>
<item name="android:statusBarColor">@android:color/transparent</item>
</style>
第 3 步:
为您的 activity xml 使用自定义工具栏,
<?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"
android:background="@drawable/border"
tools:context=".MainActivity">
<android.support.v7.widget.Toolbar
android:id="@+id/toolbar"
android:layout_width="match_parent"
android:layout_marginRight="4dp"
android:layout_marginStart="4dp"
android:layout_marginLeft="4dp"
android:layout_marginEnd="4dp"
android:layout_marginTop="4dp"
app:layout_constraintTop_toTopOf="parent"
app:contentInsetLeft="0dp"
app:contentInsetStart="0dp"
app:contentInsetRight="0dp"
app:contentInsetEnd="0dp"
android:layout_height="wrap_content">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@color/colorPrimary"
android:orientation="vertical">
<ImageView
android:background="@color/colorPrimaryDark"
android:layout_width="match_parent"
android:layout_height="24dp" />
<TextView
android:text="@string/app_name"
android:textStyle="bold"
android:textSize="16sp"
android:textColor="#FFF"
android:gravity="center_vertical"
android:layout_width="match_parent"
android:layout_marginStart="16dp"
android:layout_height="?attr/actionBarSize" />
</LinearLayout>
</android.support.v7.widget.Toolbar>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Hello World!"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent" />
</android.support.constraint.ConstraintLayout>
第 4 步:
最后,在您的 onCreateMethod 活动中,
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
getWindow().getDecorView().setSystemUiVisibility(
View.SYSTEM_UI_FLAG_LAYOUT_STABLE
| View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN);
}
这是一个示例输出: