An easy way to format SearchView's

SearchViewFormatter.java

import android.content.res.Resources;
import android.graphics.drawable.Drawable;
import android.text.Spannable;
import android.text.SpannableStringBuilder;
import android.text.style.ImageSpan;
import android.view.View;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.SearchView;
import android.widget.TextView;

public class SearchViewFormatter {
    protected int mSearchBackGroundResource = 0;
    protected int mSearchIconResource = 0;
    protected boolean mSearchIconInside = false;
    protected boolean mSearchIconOutside = false;
    protected int mSearchVoiceIconResource = 0;
    protected int mSearchTextColorResource = 0;
    protected int mSearchHintColorResource = 0;
    protected String mSearchHintText = "";
    protected int mSearchHintTextResource = 0;
    protected int mInputType = Integer.MIN_VALUE;
    protected int mSearchCloseIconResource = 0;
    protected TextView.OnEditorActionListener mEditorActionListener;
    protected Resources mResources;

    public SearchViewFormatter setSearchBackGroundResource(int searchBackGroundResource) {
        mSearchBackGroundResource = searchBackGroundResource;
        return this;
    }

    public SearchViewFormatter setSearchIconResource(int searchIconResource, boolean inside, boolean outside) {
        mSearchIconResource = searchIconResource;
        mSearchIconInside = inside;
        mSearchIconOutside = outside;
        return this;
    }

    public SearchViewFormatter setSearchVoiceIconResource(int searchVoiceIconResource) {
        mSearchVoiceIconResource = searchVoiceIconResource;
        return this;
    }

    public SearchViewFormatter setSearchTextColorResource(int searchTextColorResource) {
        mSearchTextColorResource = searchTextColorResource;
        return this;
    }

    public SearchViewFormatter setSearchHintColorResource(int searchHintColorResource) {
        mSearchHintColorResource = searchHintColorResource;
        return this;
    }

    public SearchViewFormatter setSearchHintText(String searchHintText) {
        mSearchHintText = searchHintText;
        return this;
    }

    public SearchViewFormatter setSearchHintTextResource(int searchHintText) {
        mSearchHintTextResource = searchHintText;
        return this;
    }

    public SearchViewFormatter setInputType(int inputType) {
        mInputType = inputType;
        return this;
    }

    public SearchViewFormatter setSearchCloseIconResource(int searchCloseIconResource) {
        mSearchCloseIconResource = searchCloseIconResource;
        return this;
    }

    public SearchViewFormatter setEditorActionListener(TextView.OnEditorActionListener editorActionListener) {
        mEditorActionListener = editorActionListener;
        return this;
    }

    public void format(SearchView searchView) {
        if (searchView == null) {
            return;
        }

        mResources = searchView.getContext().getResources();
        int id;

        if (mSearchBackGroundResource != 0) {
            id = getIdentifier("search_plate");
            View view = searchView.findViewById(id);
            view.setBackgroundResource(mSearchBackGroundResource);

            id = getIdentifier("submit_area");
            view = searchView.findViewById(id);
            view.setBackgroundResource(mSearchBackGroundResource);
        }

        if (mSearchVoiceIconResource != 0) {
            id = getIdentifier("search_voice_btn");
            ImageView view = (ImageView) searchView.findViewById(id);
            view.setImageResource(mSearchVoiceIconResource);
        }

        if (mSearchCloseIconResource != 0) {
            id = getIdentifier("search_close_btn");
            ImageView view = (ImageView) searchView.findViewById(id);
            view.setImageResource(mSearchCloseIconResource);
        }

        id = getIdentifier("search_src_text");
        TextView view = (TextView) searchView.findViewById(id);
        if (mSearchTextColorResource != 0) {
            view.setTextColor(mResources.getColor(mSearchTextColorResource));
        }
        if (mSearchHintColorResource != 0) {
            view.setHintTextColor(mResources.getColor(mSearchHintColorResource));
        }
        if (mInputType > Integer.MIN_VALUE) {
            view.setInputType(mInputType);
        }
        if (mSearchIconResource != 0) {
            ImageView imageView = (ImageView) searchView.findViewById(getIdentifier("search_mag_icon"));

            if (mSearchIconInside) {
                Drawable searchIconDrawable = mResources.getDrawable(mSearchIconResource);
                int size = (int) (view.getTextSize() * 1.25f);
                searchIconDrawable.setBounds(0, 0, size, size);

                if (mSearchHintTextResource != 0) {
                    mSearchHintText = mResources.getString(mSearchHintTextResource);
                }

                SpannableStringBuilder hintBuilder = new SpannableStringBuilder("   ");
                hintBuilder.append(mSearchHintText);
                hintBuilder.setSpan(
                        new ImageSpan(searchIconDrawable),
                        1,
                        2,
                        Spannable.SPAN_EXCLUSIVE_EXCLUSIVE
                );

                view.setHint(hintBuilder);
                imageView.setLayoutParams(new LinearLayout.LayoutParams(0, 0));
            }
            if (mSearchIconOutside) {
                int searchImgId = getIdentifier("search_button");
                imageView = (ImageView) searchView.findViewById(searchImgId);

                imageView.setImageResource(mSearchIconResource);
            }
        }

        if (mEditorActionListener != null) {
            view.setOnEditorActionListener(mEditorActionListener);
        }
    }

    protected int getIdentifier(String literalId) {
        return mResources.getIdentifier(
                String.format("android:id/%s", literalId),
                null,
                null
        );
    }
}

had a few modifications to get the search icons inside/outside to work right:

import android.content.res.Resources;
import android.graphics.drawable.Drawable;
import android.text.Spannable;
import android.text.SpannableStringBuilder;
import android.text.style.ImageSpan;
import android.view.View;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.SearchView;
import android.widget.TextView;

import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;

public class SearchViewFormatter {

protected int mSearchBackGroundResource = 0;
protected int mSearchIconResource = 0;
protected boolean mSearchIconInside = false;
protected boolean mSearchIconOutside = false;
protected int mSearchVoiceIconResource = 0;
protected int mSearchTextColorResource = 0;
protected int mSearchHintColorResource = 0;
protected String mSearchHintText = "";
protected int mInputType = Integer.MIN_VALUE;
protected int mSearchCloseIconResource = 0;
protected TextView.OnEditorActionListener mEditorActionListener;
protected Resources mResources;

public SearchViewFormatter setSearchBackGroundResource(int searchBackGroundResource) {
    mSearchBackGroundResource = searchBackGroundResource;
    return this;
}

public SearchViewFormatter setSearchIconResource(int searchIconResource, boolean inside, boolean outside) {
    mSearchIconResource = searchIconResource;
    mSearchIconInside = inside;
    mSearchIconOutside = outside;
    return this;
}

public SearchViewFormatter setSearchVoiceIconResource(int searchVoiceIconResource) {
    mSearchVoiceIconResource = searchVoiceIconResource;
    return this;
}

public SearchViewFormatter setSearchTextColorResource(int searchTextColorResource) {
    mSearchTextColorResource = searchTextColorResource;
    return this;
}

public SearchViewFormatter setSearchHintColorResource(int searchHintColorResource) {
    mSearchHintColorResource = searchHintColorResource;
    return this;
}

public SearchViewFormatter setSearchHintText(String searchHintText) {
    mSearchHintText = searchHintText;
    return this;
}

public SearchViewFormatter setInputType(int inputType) {
    mInputType = inputType;
    return this;
}

public SearchViewFormatter setSearchCloseIconResource(int searchCloseIconResource) {
    mSearchCloseIconResource = searchCloseIconResource;
    return this;
}

public SearchViewFormatter setEditorActionListener(TextView.OnEditorActionListener editorActionListener) {
    mEditorActionListener = editorActionListener;
    return this;
}

public void format(SearchView searchView) {
    if (searchView == null) {
        return;
    }

    mResources = searchView.getContext().getResources();
    int id;

    if (mSearchBackGroundResource != 0) {
        id = getIdentifier("search_plate");
        View view = searchView.findViewById(id);
        view.setBackgroundResource(mSearchBackGroundResource);

        id = getIdentifier("submit_area");
        view = searchView.findViewById(id);
        view.setBackgroundResource(mSearchBackGroundResource);
    }

    if (mSearchVoiceIconResource != 0) {
        id = getIdentifier("search_voice_btn");
        ImageView view = (ImageView) searchView.findViewById(id);
        view.setImageResource(mSearchVoiceIconResource);
    }

    if (mSearchCloseIconResource != 0) {
        id = getIdentifier("search_close_btn");
        ImageView view = (ImageView) searchView.findViewById(id);
        view.setImageResource(mSearchCloseIconResource);
    }

    id = getIdentifier("search_src_text");
    TextView view = (TextView) searchView.findViewById(id);
    if (mSearchTextColorResource != 0) {
        view.setTextColor(mResources.getColor(mSearchTextColorResource));
    }
    if (mSearchHintColorResource != 0) {
        view.setHintTextColor(mResources.getColor(mSearchHintColorResource));
    }
    if (mInputType > Integer.MIN_VALUE) {
        view.setInputType(mInputType);
    }
    if (mSearchIconResource != 0) {
        ImageView imageView = (ImageView) searchView.findViewById(getIdentifier("search_mag_icon"));

        if (mSearchIconInside) {
            Drawable searchIconDrawable = mResources.getDrawable(mSearchIconResource);
            int size = (int) (view.getTextSize() * 1.25f);
            searchIconDrawable.setBounds(0, 0, size, size);

            SpannableStringBuilder hintBuilder = new SpannableStringBuilder("   ");
            hintBuilder.append(mSearchHintText);  // we can't append view.getHint() because that includes the old icon
            hintBuilder.setSpan(
                    new ImageSpan(searchIconDrawable),
                    1,
                    2,
                    Spannable.SPAN_EXCLUSIVE_EXCLUSIVE
            );

            view.setHint(hintBuilder);
            imageView.setLayoutParams(new LinearLayout.LayoutParams(0, 0));
        }
        if (mSearchIconOutside) {
            int searchImgId = getIdentifier("search_button");
            imageView = (ImageView) searchView.findViewById(searchImgId);

            imageView.setImageResource(mSearchIconResource);
        }
    }

    if (mEditorActionListener != null) {
        view.setOnEditorActionListener(mEditorActionListener);
    }
}

protected int getIdentifier(String literalId) {
    return mResources.getIdentifier(
            String.format("android:id/%s", literalId),
            null,
            null
    );
}

}

Thanks @kenyee I updated the gist with your contribution 👍

Updated some deprecated methods

`import android.content.Context
import android.content.res.Resources
import android.text.Spannable
import android.text.SpannableStringBuilder
import android.text.style.ImageSpan
import android.view.View
import android.widget.ImageView
import android.widget.LinearLayout
import android.widget.SearchView
import android.widget.TextView
import android.widget.TextView.OnEditorActionListener
import androidx.core.content.ContextCompat

@Suppress("unused")
class SearchViewFormatter(private val context : Context) {
var mSearchBackGroundResource = 0
var mSearchIconResource = 0
var mSearchIconInside = false
private var mSearchIconOutside = false
var mSearchVoiceIconResource = 0
var mSearchTextColorResource = 0
var mSearchHintColorResource = 0
var mSearchHintText = ""
var mSearchHintTextResource = 0
var mInputType = Int.MIN_VALUE
private var mSearchCloseIconResource = 0
var mEditorActionListener: OnEditorActionListener? = null
var mResources: Resources? = null
fun setSearchBackGroundResource(searchBackGroundResource: Int): SearchViewFormatter {
mSearchBackGroundResource = searchBackGroundResource
return this
}

fun setSearchIconResource(
    searchIconResource: Int,
    inside: Boolean,
    outside: Boolean
): SearchViewFormatter {
    mSearchIconResource = searchIconResource
    mSearchIconInside = inside
    mSearchIconOutside = outside
    return this
}


fun setSearchVoiceIconResource(searchVoiceIconResource: Int): SearchViewFormatter {
    mSearchVoiceIconResource = searchVoiceIconResource
    return this
}

fun setSearchTextColorResource(searchTextColorResource: Int): SearchViewFormatter {
    mSearchTextColorResource = searchTextColorResource
    return this
}

fun setSearchHintColorResource(searchHintColorResource: Int): SearchViewFormatter {
    mSearchHintColorResource = searchHintColorResource
    return this
}

fun setSearchHintText(searchHintText: String): SearchViewFormatter {
    mSearchHintText = searchHintText
    return this
}

fun setSearchHintTextResource(searchHintText: Int): SearchViewFormatter {
    mSearchHintTextResource = searchHintText
    return this
}

fun setInputType(inputType: Int): SearchViewFormatter {
    mInputType = inputType
    return this
}

fun setSearchCloseIconResource(searchCloseIconResource: Int): SearchViewFormatter {
    mSearchCloseIconResource = searchCloseIconResource
    return this
}

fun setEditorActionListener(editorActionListener: OnEditorActionListener?): SearchViewFormatter {
    mEditorActionListener = editorActionListener
    return this
}

fun format(searchView: SearchView?) {
    if (searchView == null) {
        return
    }
    mResources = searchView.context.resources
    var id: Int
    if (mSearchBackGroundResource != 0) {
        id = getIdentifier("search_plate")
        var view = searchView.findViewById<View>(id)
        view.setBackgroundResource(mSearchBackGroundResource)
        id = getIdentifier("submit_area")
        view = searchView.findViewById(id)
        view.setBackgroundResource(mSearchBackGroundResource)
    }
    if (mSearchVoiceIconResource != 0) {
        id = getIdentifier("search_voice_btn")
        val view = searchView.findViewById<View>(id) as ImageView
        view.setImageResource(mSearchVoiceIconResource)
    }
    if (mSearchCloseIconResource != 0) {
        id = getIdentifier("search_close_btn")
        val view = searchView.findViewById<View>(id) as ImageView
        view.setImageResource(mSearchCloseIconResource)
    }
    id = getIdentifier("search_src_text")
    val view = searchView.findViewById<View>(id) as TextView
    if (mSearchTextColorResource != 0) {
        view.setTextColor(ContextCompat.getColor(context, mSearchTextColorResource))
    }
    if (mSearchHintColorResource != 0) {
        view.setHintTextColor(ContextCompat.getColor(context, mSearchHintColorResource))
    }
    if (mInputType > Int.MIN_VALUE) {
        view.inputType = mInputType
    }
    if (mSearchIconResource != 0) {
        var imageView =
            searchView.findViewById<View>(getIdentifier("search_mag_icon")) as ImageView
        if (mSearchIconInside) {
            val searchIconDrawable = ContextCompat.getDrawable(context, mSearchIconResource)
            val size = (view.textSize * 1.25f).toInt()
            searchIconDrawable?.setBounds(0, 0, size, size)
            if (mSearchHintTextResource != 0) {
                mSearchHintText = mResources!!.getString(mSearchHintTextResource)
            }
            val hintBuilder = SpannableStringBuilder("   ")
            hintBuilder.append(mSearchHintText)
            hintBuilder.setSpan(
                ImageSpan(searchIconDrawable!!),
                1,
                2,
                Spannable.SPAN_EXCLUSIVE_EXCLUSIVE
            )
            view.hint = hintBuilder
            imageView.layoutParams = LinearLayout.LayoutParams(0, 0)
        }
        if (mSearchIconOutside) {
            val searchImgId = getIdentifier("search_button")
            imageView = searchView.findViewById<View>(searchImgId) as ImageView
            imageView.setImageResource(mSearchIconResource)
        }
    }

    if (mEditorActionListener != null) {
        view.setOnEditorActionListener(mEditorActionListener)
    }
}

private fun getIdentifier(literalId: String?): Int {
    return mResources!!.getIdentifier(
        String.format("android:id/%s", literalId),
        null,
        null
    )
}

}`