A quickly made Android View to show an American flag.

flag_children.xml

<?xml version="1.0" encoding="utf-8"?>
<merge xmlns:android="http://schemas.android.com/apk/res/android">
  <LinearLayout
      android:layout_width="match_parent"
      android:layout_height="0dp"
      android:layout_weight="7"
      android:orientation="horizontal"
      >

    <com.example.emptytemplate.StarBannerView
        android:layout_width="0dp"
        android:layout_height="match_parent"
        android:layout_weight="2"
        />

    <LinearLayout
        android:orientation="vertical"
        android:layout_width="0dp"
        android:layout_height="match_parent"
        android:layout_weight="3">

      <View
          android:background="#F00"
          android:layout_width="match_parent"
          android:layout_height="0dp"
          android:layout_weight="1"
          />

      <View
          android:background="#FFF"
          android:layout_width="match_parent"
          android:layout_height="0dp"
          android:layout_weight="1"
          />

      <View
          android:background="#F00"
          android:layout_width="match_parent"
          android:layout_height="0dp"
          android:layout_weight="1"
          />

      <View
          android:background="#FFF"
          android:layout_width="match_parent"
          android:layout_height="0dp"
          android:layout_weight="1"
          />

      <View
          android:background="#F00"
          android:layout_width="match_parent"
          android:layout_height="0dp"
          android:layout_weight="1"
          />

      <View
          android:background="#FFF"
          android:layout_width="match_parent"
          android:layout_height="0dp"
          android:layout_weight="1"
          />
      </LinearLayout>

  </LinearLayout>

  <View
      android:background="#F00"
      android:layout_width="match_parent"
      android:layout_height="0dp"
      android:layout_weight="1"
      />

  <View
      android:background="#FFF"
      android:layout_width="match_parent"
      android:layout_height="0dp"
      android:layout_weight="1"
      />

  <View
      android:background="#F00"
      android:layout_width="match_parent"
      android:layout_height="0dp"
      android:layout_weight="1"
      />

  <View
      android:background="#FFF"
      android:layout_width="match_parent"
      android:layout_height="0dp"
      android:layout_weight="1"
      />

  <View
      android:background="#F00"
      android:layout_width="match_parent"
      android:layout_height="0dp"
      android:layout_weight="1"
      />

  <View
      android:background="#FFF"
      android:layout_width="match_parent"
      android:layout_height="0dp"
      android:layout_weight="1"
      />

  <View
      android:background="#F00"
      android:layout_width="match_parent"
      android:layout_height="0dp"
      android:layout_weight="1"
      />
</merge>

FlagView.java

/*
 * Copyright (C) 2016 Eric Cochran
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import android.annotation.TargetApi;
import android.content.Context;
import android.os.Build;
import android.util.AttributeSet;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.widget.LinearLayout;

import static android.view.View.MeasureSpec.EXACTLY;
import static android.view.View.MeasureSpec.UNSPECIFIED;

public final class FlagView extends LinearLayout {
  public FlagView(Context context) {
    super(context);
  }

  public FlagView(Context context, AttributeSet attrs) {
    super(context, attrs);
  }

  public FlagView(Context context, AttributeSet attrs, int defStyleAttr) {
    super(context, attrs, defStyleAttr);
  }

  @TargetApi(Build.VERSION_CODES.LOLLIPOP)
  public FlagView(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {
    super(context, attrs, defStyleAttr, defStyleRes);
  }

  {
    Context context = getContext();
    setOrientation(VERTICAL);
    setGravity(Gravity.CENTER);
    LayoutInflater.from(context).inflate(R.layout.flag_children, this, true);
  }

  @Override protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
    int widthMode = MeasureSpec.getMode(widthMeasureSpec);
    int heightMode = MeasureSpec.getMode(heightMeasureSpec);
    int widthSize = MeasureSpec.getSize(widthMeasureSpec);
    int heightSize = MeasureSpec.getSize(heightMeasureSpec);
    float widthToHeightRatio = 1.9f;
    int width;
    int height;
    if (widthMode == UNSPECIFIED && heightMode == UNSPECIFIED
        || widthMode != UNSPECIFIED && heightMode != UNSPECIFIED) {
      if (widthSize / widthToHeightRatio > heightSize) {
        // Limited by height.
        width = (int) (heightSize * widthToHeightRatio);
        height = heightSize;
      } else {
        // Limited by width.
        width = widthSize;
        height = (int) (widthSize / widthToHeightRatio);
      }
    } else if (widthMode == UNSPECIFIED) {
      // Limited by height.
      width = (int) (heightSize * widthToHeightRatio);
      height = heightSize;
    } else {
      // Limited by width.
      width = widthSize;
      height = (int) (widthSize / widthToHeightRatio);
    }
    super.onMeasure(MeasureSpec.makeMeasureSpec(width, EXACTLY),
        MeasureSpec.makeMeasureSpec(height, EXACTLY));
    if (widthMode == EXACTLY && heightMode == EXACTLY) {
      setMeasuredDimension(widthSize, heightSize);
    } else if (widthMode == EXACTLY) {
      setMeasuredDimension(widthSize, getMeasuredHeight());
    } else if (heightMode == EXACTLY) {
      setMeasuredDimension(getMeasuredWidth(), heightSize);
    }
  }
}

StarBannerView.java

/*
 * Copyright (C) 2016 Eric Cochran
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import android.annotation.TargetApi;
import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.os.Build;
import android.util.AttributeSet;
import android.view.View;

public final class StarBannerView extends View {
  private final Paint paint;
  private final float[] points = new float[100];

  {
    paint = new Paint();
    paint.setStrokeWidth(8);
    paint.setColor(Color.WHITE);
  }

  public StarBannerView(Context context) {
    super(context);
  }

  public StarBannerView(Context context, AttributeSet attrs) {
    super(context, attrs);
  }

  public StarBannerView(Context context, AttributeSet attrs, int defStyleAttr) {
    super(context, attrs, defStyleAttr);
  }

  @TargetApi(Build.VERSION_CODES.LOLLIPOP)
  public StarBannerView(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {
    super(context, attrs, defStyleAttr, defStyleRes);
  }

  @Override protected void onDraw(Canvas canvas) {
    super.onDraw(canvas);
    int width = canvas.getWidth();
    int height = canvas.getHeight();
    canvas.drawColor(Color.BLUE);
    int row = 1;
    int column = 1;
    int rowSpaceCount = 10;
    int columnSpaceCount = 12;
    boolean insetRow = false;
    for (int i = 0; i < 100; i += 2) {
      points[i] = width * column / columnSpaceCount;
      points[i + 1] = height * row / rowSpaceCount;
      if (insetRow) {
        if (column == 10) {
          row++;
          column = 1;
          insetRow = false;
        } else {
          column += 2;
        }
      } else {
        if (column == 11) {
          row++;
          column = 2;
          insetRow = true;
        } else {
          column += 2;
        }
      }
    }
    canvas.drawPoints(points, paint);
  }
}