答案 0 :(得分:4)
@Pauli 。您可以使用Image进行简单练习,可以尝试这种方式。使用这个逻辑
<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android" >
<item
android:drawable="@color/Your_color">
</item>
<item>
<rotate
android:fromDegrees="50"
android:pivotX="10%"
android:pivotY="85%"
>
<shape
android:shape="rectangle">
<solid android:color="#000000" />
</shape>
</rotate>
</item>
SO礼貌
答案 1 :(得分:4)
在colors.xml文件中创建颜色资源
<color name="primaryColor">#3F51B5</color>
<color name="primaryColorDark">#303F9F</color>
创建Java文件TriangleBackgroundView.Java:
public class TriangleBackgroundView extends View {
Paint paint;
Paint bgPaint;
public TriangleBackgroundView(Context context) {
super(context);
init();
}
public TriangleBackgroundView(Context context, AttributeSet attrs) {
super(context, attrs);
init();
}
public TriangleBackgroundView(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
init();
}
private void init() {
paint = new Paint();
paint.setStrokeWidth(1);
paint.setAntiAlias(true);
paint.setStrokeCap(Paint.Cap.SQUARE);
paint.setStyle(Paint.Style.FILL);
paint.setColor(getResources().getColor(R.color.primaryColor));
bgPaint= new Paint();
bgPaint.setStyle(Paint.Style.FILL);
bgPaint.setColor(getResources().getColor(R.color.primaryColorDark));
}
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
}
@Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
int h = getMeasuredHeight();
int w = getMeasuredWidth();
canvas.drawRect(0,0,w,h,bgPaint);
Path path = new Path();
path.moveTo(0, h);
path.lineTo(w, h);
path.lineTo(0, 0);
path.lineTo(0, h);
path.close();
canvas.drawPath(path,paint);
}
}
现在在您的布局中添加自定义视图:
<com.yourpackage.TriangleBackgroundView
android:layout_height="match_parent"
android:layout_width="match_parent"/>
<TextView android:text="@string/hello_world" android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textStyle="bold"
android:textSize="20dp"
android:textColor="@android:color/white"
android:layout_centerInParent="true"/>
您可以从本教程中获得帮助,以创建具有三角形的形状对角线:
来源:http://marcouberti.net/2015/06/23/create-a-custom-triangle-background-view-in-android/
答案 2 :(得分:1)
您可以使用以下内容:
<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android" >
<item>
<shape android:shape="rectangle" >
<solid android:color="@color/yellow_color"/>
</shape>
</item>
<item>
<rotate
xmlns:android="http://schemas.android.com/apk/res/android"
android:fromDegrees="45"
android:pivotX="85%"
android:pivotY="135%">
<shape>
<solid android:color="@color/brown_color" />
</shape>
</rotate>
</item>
<item>
<rotate
xmlns:android="http://schemas.android.com/apk/res/android"
android:fromDegrees="45"
android:pivotX="-35%"
android:pivotY="85%">
<shape android:shape="rectangle">
<solid android:color="@color/brown_color" />
</shape>
</rotate>
</item>
</layer-list>
两个旋转的矩形在图像中完成填充棕色边的工作。
答案 3 :(得分:1)
我知道回答这个问题为时已晚,但仍然在这里发布我的答案,以便其他人可以参考:
<?xml version="1.0" encoding="utf-8"?>
<vector xmlns:android="http://schemas.android.com/apk/res/android"
android:height="100dp"
android:width="100dp"
android:viewportHeight="100"
android:viewportWidth="100">
<path
android:name="dark_triangle"
android:fillColor="#FFFFFF"
android:pathData="M 100,0 L 0,100 100,100 z" />
<path
android:name="light_triangle"
android:fillColor="#d0021b"
android:pathData="M 0,0 L 100,0 0,100 z" />
</vector>
答案 4 :(得分:1)
half_diagonal.xml
<?xml version="1.0" encoding="utf-8"?>
<vector xmlns:android="http://schemas.android.com/apk/res/android"
android:width="200dp"
android:height="200dp"
android:viewportHeight="100"
android:viewportWidth="100">
<path
android:name="dark_triangle"
android:fillColor="#673AB7"
android:pathData="M 0,0 L 100,0 0,100 z" />
</vector>
答案 5 :(得分:-1)
您可以使用渐变工具......