您好，我正在使用一个在所有应用程序图标后面都有圆圈背景的android启动器。我正在使用LayerDrawable使其工作，但是圆形图像较小，然后应用程序图标如下所示：
所以我的问题是如何使圆圈图标大于应用程序图标？
这是我的圈子图标代码：
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item>
<shape android:shape="oval">
<stroke android:color="#ccc" android:width="5dp" />
<solid android:color="#ffffff"/>
<size android:width="58dp" android:height="58dp"/>
</shape>
</item>
</selector>
这是我的生成应用程序图标的类：
package Appname.widget;
import android.content.ClipData;
import android.content.Context;
import android.content.Intent;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Rect;
import android.graphics.drawable.Drawable;
import android.graphics.drawable.LayerDrawable;
import android.support.annotation.ColorInt;
import android.support.annotation.Nullable;
import android.util.AttributeSet;
import android.view.Gravity;
import android.view.HapticFeedbackConstants;
import android.view.View;
import android.widget.ImageView;
import appame.R;
import appname.AppManager;
import appname.util.DragAction;
import appname.util.GoodDragShadowBuilder;
import appname.util.LauncherSettings;
import appname.util.Tool;
public class AppItemView extends View implements Drawable.Callback{
public Drawable getIcon() {
return icon;
}
public void setIcon(Drawable icon) {
this.icon = icon;
this.icon.setCallback(this);
}
@Override
public void refreshDrawableState() {
invalidateDrawable(icon);
super.refreshDrawableState();
}
@Override
public void invalidateDrawable(Drawable drawable) {
invalidate();
}
public String getLabel() {
return label;
}
public void setLabel(String label) {
this.label = label;
}
public float getIconSize() {
return iconSize;
}
public void setIconSize(float iconSize) {
this.iconSize = iconSize;
}
private float iconSize;
private Drawable icon;
private String label;
public boolean isShortcut;
public Paint textPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
private Rect mTextBound = new Rect();
private boolean noLabel,vibrateWhenLongPress;
private float labelHeight;
public AppItemView(Context context) {
super(context);
init();
}
public AppItemView(Context context, AttributeSet attrs) {
super(context, attrs);
init();
}
private void init(){
setWillNotDraw(false);
labelHeight = Tool.convertDpToPixel(14,getContext());
textPaint.setTextSize(sp2px(getContext(),14));
textPaint.setColor(Color.DKGRAY);
}
public static int sp2px(Context context, float spValue) {
final float fontScale = context.getResources().getDisplayMetrics().scaledDensity;
return (int) (spValue * fontScale + 0.5f);
}
@Override
protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
super.onLayout(changed, left, top, right, bottom);
}
@Override
protected void onDraw(Canvas canvas) {
Drawable iconback = getResources().getDrawable(R.drawable.iconback);
LayerDrawable appicon = new LayerDrawable(new Drawable[]{iconback, icon});
appicon.setLayerGravity(0, Gravity.CENTER);
appicon.setLayerGravity(1, Gravity.CENTER);
if (label != null && !noLabel){
textPaint.getTextBounds(label,0,label.length(),mTextBound);
}
//The height should be the same as they have the same text size.
float mHeight = iconSize + (noLabel? 0 : labelHeight);
float heightPadding = (getHeight() - mHeight)/2f;
if (label != null && !noLabel) {
float x = (getWidth()-mTextBound.width())/2f;
if (x < 0)
x = 0;
canvas.drawText(label,x, getHeight() - heightPadding, textPaint);
}
if (appicon != null ) {
canvas.save();
canvas.translate((getWidth()-iconSize)/2,heightPadding);
appicon.setLayerWidth(1, (int) iconSize);
appicon.setLayerHeight(1, (int) iconSize);
appicon.setBounds(0,0,(int)iconSize,(int)iconSize);
appicon.draw(canvas);
canvas.restore();
}
}
public static class Builder{
AppItemView view;
public Builder(Context context){
view = new AppItemView(context);
float iconSize = Tool.convertDpToPixel(LauncherSettings.getInstance(view.getContext()).generalSettings.iconSize, view.getContext());
view.setIconSize(iconSize);
}
public AppItemView getView(){
return view;
}
public Builder setAppItem(AppManager.App app){
view.setIcon(app.icon);
view.setLabel(app.appName);
return this;
}
public Builder withOnClickLaunchApp(final AppManager.App app){
view.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
Tool.createScaleInScaleOutAnim(view, new Runnable() {
@Override
public void run() {
Tool.startApp(view.getContext(), app);
}
});
}
});
return this;
}
public Builder withOnLongClickDrag(final AppManager.App app,final DragAction.Action action,@Nullable final OnLongClickListener eventAction){
withOnLongClickDrag(Desktop.Item.newAppItem(app),action,eventAction);
view.setScaleX(0.75f); // <- resized by scaling
view.setScaleY(0.75f);
return this;
}
public Builder withOnLongClickDrag(final Desktop.Item item, final DragAction.Action action, @Nullable final OnLongClickListener eventAction){
view.setOnLongClickListener(new OnLongClickListener() {
@Override
public boolean onLongClick(View v) {
if (view.vibrateWhenLongPress)
v.performHapticFeedback(HapticFeedbackConstants.LONG_PRESS);
Intent i = new Intent();
i.putExtra("mDragData", item);
ClipData data = ClipData.newIntent("mDragIntent", i);
v.startDrag(data, new GoodDragShadowBuilder(v), new DragAction(action), 0);
if (eventAction != null)
eventAction.onLongClick(v);
return true;
}
});
return this;
}
public Builder withOnTouchGetPosition(){
view.setOnTouchListener(Tool.getItemOnTouchListener());
return this;
}
public Builder setTextColor(@ColorInt int color){
view.textPaint.setColor(color);
return this;
}
public Builder setNoLabel(){
view.noLabel = true;
return this;
}
public Builder vibrateWhenLongPress(){
view.vibrateWhenLongPress = true;
return this;
}
public Builder setShortcutItem(final Intent intent){
view.isShortcut = true;
view.setScaleX(0.75f); // <- resized by scaling
view.setScaleY(0.75f);
view.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
Tool.createScaleInScaleOutAnim(view, new Runnable() {
@Override
public void run() {
view.getContext().startActivity(intent);
}
});
}
});
view.setScaleX(0.75f); // <- resized by scaling
view.setScaleY(0.75f);
view.setIcon(Tool.getIconFromID(view.getContext(),intent.getStringExtra("shortCutIconID")));
view.setLabel(intent.getStringExtra("shortCutName"));
return this;
}
}
}
请注意，图标是用JAVA NOT XML生成的！
任何帮助都将是惊人的！
提前致谢 ：）
最佳答案
在创建LayerDrawable之前，您可以将图标包装在InsetDrawable内，如下所示：
Drawable iconWithPadding = new InsetDrawable(icon, paddingSize);
LayerDrawable appicon = new LayerDrawable(new Drawable[]{iconback, iconWithPadding});
这将有效地在图标上应用填充。
关于java - 如何在LayerDrawable中更改一个图像的大小，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/40309400/