package com.noober.background;
import android.content.Context;
import android.content.res.ColorStateList;
import android.content.res.TypedArray;
import android.graphics.drawable.AnimationDrawable;
import android.graphics.drawable.Drawable;
import android.graphics.drawable.GradientDrawable;
import android.graphics.drawable.LayerDrawable;
import android.graphics.drawable.RippleDrawable;
import android.graphics.drawable.StateListDrawable;
import android.os.Build;
import android.support.annotation.Nullable;
import android.support.v4.util.ArrayMap;
import android.text.TextUtils;
import android.util.AttributeSet;
import android.util.Log;
import android.view.InflateException;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.CompoundButton;
import android.widget.TextView;
import com.noober.background.drawable.DrawableFactory;
import java.lang.reflect.Constructor;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.HashMap;
import java.util.Map;
public class BackgroundFactory implements LayoutInflater.Factory2 {
private LayoutInflater.Factory mViewCreateFactory;
private LayoutInflater.Factory2 mViewCreateFactory2;
private static final Class<?>[] sConstructorSignature = new Class[]{Context.class, AttributeSet.class};
private static final Object[] mConstructorArgs = new Object[2];
private static final Map<String, Constructor<? extends View>> sConstructorMap = new ArrayMap<>();
private static final HashMap<String, HashMap<String, Method>> methodMap = new HashMap<>();
@Override
public View onCreateView(String name, Context context, AttributeSet attrs) {
//如果是blview，代表已经进行了背景设置，无需再次创建，留给系统创建就行
if (name.startsWith("com.noober.background.view")) {
return null;
}
View view = null;
//防止与其他调用factory库冲突，例如字体、皮肤替换库，用已经设置的factory来创建view
if (mViewCreateFactory2 != null) {
view = mViewCreateFactory2.onCreateView(name, context, attrs);
if (view == null) {
view = mViewCreateFactory2.onCreateView(null, name, context, attrs);
}
} else if (mViewCreateFactory != null) {
view = mViewCreateFactory.onCreateView(name, context, attrs);
}
return setViewBackground(name, context, attrs, view);
}
@Nullable
public static View setViewBackground(Context context, AttributeSet attrs, View view) {
return setViewBackground(null, context, attrs, view);
}
/**
* 根据属性设置图片背景
*
* @param name view的名字
* @param context 上下文
* @param attrs bl属性
* @param view view
* @return view
*/
@Nullable
private static View setViewBackground(String name, Context context, AttributeSet attrs, View view) {
TypedArray typedArray = context.obtainStyledAttributes(attrs, R.styleable.background);
TypedArray pressTa = context.obtainStyledAttributes(attrs, R.styleable.background_press);
TypedArray selectorTa = context.obtainStyledAttributes(attrs, R.styleable.background_selector);
TypedArray textTa = context.obtainStyledAttributes(attrs, R.styleable.text_selector);
TypedArray buttonTa = context.obtainStyledAttributes(attrs, R.styleable.background_button_drawable);
TypedArray otherTa = context.obtainStyledAttributes(attrs, R.styleable.bl_other);
TypedArray animTa = context.obtainStyledAttributes(attrs, R.styleable.bl_anim);
TypedArray multiSelTa = context.obtainStyledAttributes(attrs, R.styleable.background_multi_selector);
TypedArray multiTextTa = context.obtainStyledAttributes(attrs, R.styleable.background_multi_selector_text);
TypedArray selectorPre21Ta = null;
if (Build.VERSION.SDK_INT < Build.VERSION_CODES.LOLLIPOP) {
selectorPre21Ta = context.obtainStyledAttributes(attrs, R.styleable.background_selector_pre_21);
}
try {
if (typedArray.getIndexCount() == 0 && selectorTa.getIndexCount() == 0 && pressTa.getIndexCount() == 0
&& textTa.getIndexCount() == 0 && buttonTa.getIndexCount() == 0 && animTa.getIndexCount() == 0
&& multiSelTa.getIndexCount() == 0 && multiTextTa.getIndexCount() == 0) {
return view;
}
if (view == null) {
view = createViewFromTag(context, name, attrs);
}
if (view == null) {
return null;
}
//R.styleable.background_selector 和 R.styleable.background_multi_selector的属性不能同时使用
if (selectorTa.getIndexCount() > 0 && multiSelTa.getIndexCount() > 0) {
throw new IllegalArgumentException("Background_selector and background_multi_selector cannot be used simultaneously");
}
if (textTa.getIndexCount() > 0 && multiTextTa.getIndexCount() > 0) {
throw new IllegalArgumentException("text_selector and background_multi_selector_text cannot be used simultaneously");
}
GradientDrawable drawable = null;
StateListDrawable stateListDrawable = null;
if (buttonTa.getIndexCount() > 0 && view instanceof CompoundButton) {
view.setClickable(true);
((CompoundButton) view).setButtonDrawable(DrawableFactory.getButtonDrawable(typedArray, buttonTa));
} else if (selectorTa.getIndexCount() > 0) {
stateListDrawable = DrawableFactory.getSelectorDrawable(typedArray, selectorTa);
view.setClickable(true);
setDrawable(stateListDrawable, view, otherTa, typedArray);
} else if (pressTa.getIndexCount() > 0) {
drawable = DrawableFactory.getDrawable(typedArray);
stateListDrawable = DrawableFactory.getPressDrawable(drawable, typedArray, pressTa);
view.setClickable(true);
setDrawable(stateListDrawable, view, otherTa, typedArray);
} else if (multiSelTa.getIndexCount() > 0) {
stateListDrawable = DrawableFactory.getMultiSelectorDrawable(context, multiSelTa, typedArray);
setBackground(stateListDrawable, view, typedArray);
} else if (typedArray.getIndexCount() > 0) {
if (selectorPre21Ta != null && selectorPre21Ta.getIndexCount() > 0) {
stateListDrawable = DrawableFactory.getSelectorPre21Drawable(typedArray);
setDrawable(stateListDrawable, view, otherTa, typedArray);
} else {
drawable = DrawableFactory.getDrawable(typedArray);
setDrawable(drawable, view, otherTa, typedArray);
}
} else if (animTa.getIndexCount() > 0) {
AnimationDrawable animationDrawable = DrawableFactory.getAnimationDrawable(animTa);
setBackground(animationDrawable, view, typedArray);
if (animTa.getBoolean(R.styleable.bl_anim_bl_anim_auto_start, false)) {
animationDrawable.start();
}
}
if (view instanceof TextView && textTa.getIndexCount() > 0) {
((TextView) view).setTextColor(DrawableFactory.getTextSelectorColor(textTa));
} else if (view instanceof TextView && multiTextTa.getIndexCount() > 0) {
((TextView) view).setTextColor(DrawableFactory.getMultiTextColorSelectorColorCreator(context, multiTextTa));
}
if (typedArray.getBoolean(R.styleable.background_bl_ripple_enable, false) &&
typedArray.hasValue(R.styleable.background_bl_ripple_color)) {
int color = typedArray.getColor(R.styleable.background_bl_ripple_color, 0);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
Drawable contentDrawable = (stateListDrawable == null ? drawable : stateListDrawable);
RippleDrawable rippleDrawable = new RippleDrawable(ColorStateList.valueOf(color), contentDrawable, contentDrawable);
view.setClickable(true);
setBackground(rippleDrawable, view, typedArray);
} else if (stateListDrawable == null) {
StateListDrawable tmpDrawable = new StateListDrawable();
GradientDrawable unPressDrawable = DrawableFactory.getDrawable(typedArray);
unPressDrawable.setColor(color);
tmpDrawable.addState(new int[]{-android.R.attr.state_pressed}, drawable);
tmpDrawable.addState(new int[]{android.R.attr.state_pressed}, unPressDrawable);
view.setClickable(true);
setDrawable(tmpDrawable, view, otherTa, typedArray);
}
}
if (otherTa.hasValue(R.styleable.bl_other_bl_function)) {
String methodName = otherTa.getString(R.styleable.bl_other_bl_function);
if (!TextUtils.isEmpty(methodName)) {
final Context currentContext = view.getContext();
final Class parentClass = currentContext.getClass();
final Method method = getMethod(parentClass, methodName);
if(method != null){
view.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
try {
method.invoke(currentContext);
} catch (IllegalAccessException e) {
e.printStackTrace();
} catch (InvocationTargetException e) {
e.printStackTrace();
}
}
});
}
}
}
return view;
} catch (Exception e) {
e.printStackTrace();
return view;
} finally {
typedArray.recycle();
pressTa.recycle();
selectorTa.recycle();
textTa.recycle();
buttonTa.recycle();
otherTa.recycle();
animTa.recycle();
multiSelTa.recycle();
multiTextTa.recycle();
if (selectorPre21Ta != null) {
selectorPre21Ta.recycle();
}
}
}
private static Method getMethod(Class clazz, String methodName) {
Method method = null;
HashMap<String, Method> methodHashMap = methodMap.get(clazz.getCanonicalName());
if (methodHashMap != null) {
method = methodMap.get(clazz.getCanonicalName()).get(methodName);
} else {
methodHashMap = new HashMap<>();
methodMap.put(clazz.getCanonicalName(), methodHashMap);
}
if (method == null) {
method = findMethod(clazz, methodName);
if (method != null) {
methodHashMap.put(methodName, method);
}
}
return method;
}
private static Method findMethod(Class clazz, String methodName) {
Method method;
try {
method = clazz.getMethod(methodName);
} catch (NoSuchMethodException e) {
method = findDeclaredMethod(clazz, methodName);
}
return method;
}
private static Method findDeclaredMethod(Class clazz, String methodName) {
Method method = null;
try {
method = clazz.getDeclaredMethod(methodName);
method.setAccessible(true);
} catch (NoSuchMethodException e) {
if (clazz.getSuperclass() != null) {
method = findDeclaredMethod(clazz.getSuperclass(), methodName);
}
}
return method;
}
private static void setDrawable(Drawable drawable, View view, TypedArray otherTa, TypedArray typedArray) {
if (view instanceof TextView) {
if (otherTa.hasValue(R.styleable.bl_other_bl_position)) {
if (otherTa.getInt(R.styleable.bl_other_bl_position, 0) == 1) {
drawable.setBounds(0, 0, drawable.getMinimumWidth(), drawable.getMinimumHeight());
((TextView) view).setCompoundDrawables(drawable, null, null, null);
} else if (otherTa.getInt(R.styleable.bl_other_bl_position, 0) == 2) {
drawable.setBounds(0, 0, drawable.getMinimumWidth(), drawable.getMinimumHeight());
((TextView) view).setCompoundDrawables(null, drawable, null, null);
} else if (otherTa.getInt(R.styleable.bl_other_bl_position, 0) == 4) {
drawable.setBounds(0, 0, drawable.getMinimumWidth(), drawable.getMinimumHeight());
((TextView) view).setCompoundDrawables(null, null, drawable, null);
} else if (otherTa.getInt(R.styleable.bl_other_bl_position, 0) == 8) {
drawable.setBounds(0, 0, drawable.getMinimumWidth(), drawable.getMinimumHeight());
((TextView) view).setCompoundDrawables(null, null, null, drawable);
}
} else {
setBackground(drawable, view, typedArray);
}
} else {
setBackground(drawable, view, typedArray);
}
}
private static void setBackground(Drawable drawable, View view, TypedArray typedArray) {
if (typedArray.hasValue(R.styleable.background_bl_stroke_width) && typedArray.hasValue(R.styleable.background_bl_stroke_position)) {
//bl_stroke_position flag默认值
int left = 1 << 1;
int top = 1 << 2;
int right = 1 << 3;
int bottom = 1 << 4;
float width = typedArray.getDimension(R.styleable.background_bl_stroke_width, 0f);
int position = typedArray.getInt(R.styleable.background_bl_stroke_position, 0);
float leftValue = hasStatus(position, left) ? width : -width;
float topValue = hasStatus(position, top) ? width : -width;
float rightValue = hasStatus(position, right) ? width : -width;
float bottomValue = hasStatus(position, bottom) ? width : -width;
drawable = new LayerDrawable(new Drawable[]{drawable});
((LayerDrawable) drawable).setLayerInset(0, (int) leftValue, (int) topValue, (int) rightValue, (int) bottomValue);
}
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN) {
view.setBackground(drawable);
} else {
view.setBackgroundDrawable(drawable);
}
}
private static boolean hasStatus(int flag, int status) {
return (flag & status) == status;
}
public void setInterceptFactory(LayoutInflater.Factory factory) {
mViewCreateFactory = factory;
}
public void setInterceptFactory2(LayoutInflater.Factory2 factory) {
mViewCreateFactory2 = factory;
}
private static View createViewFromTag(Context context, String name, AttributeSet attrs) {
if (TextUtils.isEmpty(name)) {
return null;
}
if (name.equals("view")) {
name = attrs.getAttributeValue(null, "class");
}
try {
mConstructorArgs[0] = context;
mConstructorArgs[1] = attrs;
if (-1 == name.indexOf('.')) {
View view = null;
if ("View".equals(name)) {
view = createView(context, name, "android.view.");
}
if (view == null) {
view = createView(context, name, "android.widget.");
}
if (view == null) {
view = createView(context, name, "android.webkit.");
}
return view;
} else {
return createView(context, name, null);
}
} catch (Exception e) {
Log.w("BackgroundLibrary", "cannot create 【" + name + "】 : ");
return null;
} finally {
mConstructorArgs[0] = null;
mConstructorArgs[1] = null;
}
}
private static View createView(Context context, String name, String prefix) throws InflateException {
Constructor<? extends View> constructor = sConstructorMap.get(name);
try {
if (constructor == null) {
Class<? extends View> clazz = context.getClassLoader().loadClass(
prefix != null ? (prefix + name) : name).asSubclass(View.class);
constructor = clazz.getConstructor(sConstructorSignature);
sConstructorMap.put(name, constructor);
}
constructor.setAccessible(true);
return constructor.newInstance(mConstructorArgs);
} catch (Exception e) {
Log.w("BackgroundLibrary", "cannot create 【" + name + "】 : ");
return null;
}
}
@Override
public View onCreateView(View parent, String name, Context context, AttributeSet attrs) {
return onCreateView(name, context, attrs);
}
}
