如何添加我的操作栏来查看(Canvas)类?
public class MainActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
this.requestWindowFeature(Window.FEATURE_NO_TITLE);
this.getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);
//set paint color
setContentView(R.layout.activity_main);
//setContentView(new DrawView(this));
Toolbar toolbar = (Toolbar) findViewById(R.id.my_toolbar);
setSupportActionBar(toolbar);
//DrawView.setPaint(255, 235, 191, 47);
}
这是我的项目 并且工具栏存储在activity_main.xml中。
我想要的视觉表现:P
左侧屏幕截图是我使用setContentView(R.layout.activity_main);
时,右侧是//setContentView(new DrawView(this));
谢谢你们!如果它可以,你们可以包括。一个解释呢?我是android编程的新手:)
activity_main XML
<?xml version="1.0" encoding="utf-8"?>
<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:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context="com.example.nikol.touchpaint.MainActivity">
<!-- <view
android:id="@+id/viewid"
android:layout_width="match_parent"
android:layout_height="match_parent" />-->
<android.support.v7.widget.Toolbar
android:id="@+id/my_toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary"
android:elevation="4dp"
android:theme="@style/ThemeOverlay.AppCompat.ActionBar"
android:popupTheme="@style/ThemeOverlay.AppCompat.Light"/>
<TextView
android:id="@+id/testText"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignParentStart="true"
android:layout_marginBottom="151dp"
android:text="Hello World!" />
<Button
android:id="@+id/button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignTop="@+id/button2"
android:layout_toStartOf="@+id/button2"
android:text="New Button" />
<Button
android:id="@+id/button2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignParentEnd="true"
android:layout_marginBottom="29dp"
android:layout_marginEnd="30dp"
android:text="New Button" />
</RelativeLayout>
答案 0 :(得分:0)
答案 1 :(得分:0)
您的activity_main.xml应如下所示:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/contentView"
android:layout_width="match_parent"
android:layout_height="match_parent">
<com.example.nikol.touchpaint.DrawView
android:id="@+id/drawView"
android:layout_width="match_parent"
android:layout_height="match_parent">
</RelativeLayout>
然后在你的活动中做
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
DrawView drawView = findViewById(R.id.drawView);
}