blackzhangjx / android-notes Goto Github PK
View Code? Open in Web Editor NEWAndroid开发核心知识点笔记(不断更新中🔥)
Android开发核心知识点笔记(不断更新中🔥)
Android知识点汇总
Scroller:
invalidate 会导致 View 重绘,
后会在 draw 方法中又会去调用 computeScroll 方法
我觉得缺少一个c语言补充,如果可以补充的话,就完美了,不过还是感谢奉献
AMS涉及的图片失效
这个是懒汉式吧?
public class CustomManager {
private Context mContext;
private static final Object mLock = new Object();
private static CustomManager mInstance;
public static CustomManager getInstance(Context context) {
synchronized (mLock) {
if (mInstance == null) {
mInstance = new CustomManager(context);
}
return mInstance;
}
}
private CustomManager(Context context) {
this.mContext = context.getApplicationContext();
}
}
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