Android Studio现在在21+上支持矢量资产,并将在编译时为低版本生成png。我有一个矢量资产(来自材质图标),我想改变填充颜色。这适用于21+,但生成的png不改变颜色。有办法做到这一点吗?
<vector android:height="48dp" android:viewportHeight="24.0"
android:viewportWidth="24.0" android:width="48dp" xmlns:android="http://schemas.android.com/apk/res/android">
<path android:fillColor="@color/primary" android:pathData="M9,16.17L4.83,12l-1.42,1.41L9,19 21,7l-1.41,-1.41z"/>
这是由Filipe绘制的Kotlin版本的Helper
class DrawableHelper(var mContext: Context) {
@ColorRes
private var mColor = 0
private lateinit var mDrawable: Drawable
private lateinit var mWrappedDrawable: Drawable
fun withDrawable(@DrawableRes drawableRes: Int): DrawableHelper {
mDrawable = getDrawable(mContext, drawableRes)!!
return this
}
fun withDrawable(drawable: Drawable): DrawableHelper {
mDrawable = drawable
return this
}
@SuppressLint("ResourceType")
fun withColor(@ColorRes colorRes: Int): DrawableHelper {
mColor = ContextCompat.getColor(mContext, colorRes)
return this
}
@SuppressLint("ResourceAsColor")
fun tint(): DrawableHelper {
mWrappedDrawable = DrawableCompat.wrap(mWrappedDrawable)
DrawableCompat.setTint(mWrappedDrawable, mColor)
DrawableCompat.setTintMode(mWrappedDrawable, PorterDuff.Mode.SRC_IN)
return this
}
fun applyToBackground(view: View) {
view.background = mWrappedDrawable
}
fun applyTo(imageView: ImageView) {
imageView.setImageDrawable(mWrappedDrawable)
}
fun applyTo(menuItem: MenuItem) {
menuItem.icon = mWrappedDrawable
}
fun get(): Drawable {
return mWrappedDrawable
}
companion object {
fun withContext(context: Context): DrawableHelper {
return DrawableHelper(context)
}
}
}
正如在其他回答中所说,不要直接编辑可绘制的向量,相反,你可以在java代码中着色,像这样:
mWrappedDrawable = mDrawable.mutate();
mWrappedDrawable = DrawableCompat.wrap(mWrappedDrawable);
DrawableCompat.setTint(mWrappedDrawable, mColor);
DrawableCompat.setTintMode(mWrappedDrawable, PorterDuff.Mode.SRC_IN);
为了简单起见,我创建了一个helper类:
import android.content.Context;
import android.graphics.PorterDuff;
import android.graphics.drawable.Drawable;
import android.os.Build;
import android.support.annotation.ColorRes;
import android.support.annotation.DrawableRes;
import android.support.annotation.NonNull;
import android.support.v4.content.ContextCompat;
import android.support.v4.graphics.drawable.DrawableCompat;
import android.view.MenuItem;
import android.view.View;
import android.widget.ImageView;
/**
* {@link Drawable} helper class.
*
* @author Filipe Bezerra
* @version 18/01/2016
* @since 18/01/2016
*/
public class DrawableHelper {
@NonNull Context mContext;
@ColorRes private int mColor;
private Drawable mDrawable;
private Drawable mWrappedDrawable;
public DrawableHelper(@NonNull Context context) {
mContext = context;
}
public static DrawableHelper withContext(@NonNull Context context) {
return new DrawableHelper(context);
}
public DrawableHelper withDrawable(@DrawableRes int drawableRes) {
mDrawable = ContextCompat.getDrawable(mContext, drawableRes);
return this;
}
public DrawableHelper withDrawable(@NonNull Drawable drawable) {
mDrawable = drawable;
return this;
}
public DrawableHelper withColor(@ColorRes int colorRes) {
mColor = ContextCompat.getColor(mContext, colorRes);
return this;
}
public DrawableHelper tint() {
if (mDrawable == null) {
throw new NullPointerException("É preciso informar o recurso drawable pelo método withDrawable()");
}
if (mColor == 0) {
throw new IllegalStateException("É necessário informar a cor a ser definida pelo método withColor()");
}
mWrappedDrawable = mDrawable.mutate();
mWrappedDrawable = DrawableCompat.wrap(mWrappedDrawable);
DrawableCompat.setTint(mWrappedDrawable, mColor);
DrawableCompat.setTintMode(mWrappedDrawable, PorterDuff.Mode.SRC_IN);
return this;
}
@SuppressWarnings("deprecation")
public void applyToBackground(@NonNull View view) {
if (mWrappedDrawable == null) {
throw new NullPointerException("É preciso chamar o método tint()");
}
if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN) {
view.setBackground(mWrappedDrawable);
} else {
view.setBackgroundDrawable(mWrappedDrawable);
}
}
public void applyTo(@NonNull ImageView imageView) {
if (mWrappedDrawable == null) {
throw new NullPointerException("É preciso chamar o método tint()");
}
imageView.setImageDrawable(mWrappedDrawable);
}
public void applyTo(@NonNull MenuItem menuItem) {
if (mWrappedDrawable == null) {
throw new NullPointerException("É preciso chamar o método tint()");
}
menuItem.setIcon(mWrappedDrawable);
}
public Drawable get() {
if (mWrappedDrawable == null) {
throw new NullPointerException("É preciso chamar o método tint()");
}
return mWrappedDrawable;
}
}
要使用,只需执行以下步骤:
DrawableHelper
.withContext(this)
.withColor(R.color.white)
.withDrawable(R.drawable.ic_search_24dp)
.tint()
.applyTo(mSearchItem);
Or:
final Drawable drawable = DrawableHelper
.withContext(this)
.withColor(R.color.white)
.withDrawable(R.drawable.ic_search_24dp)
.tint()
.get();
actionBar.setHomeAsUpIndicator(drawable);