shuanghua

<application
        <!--适配7.0+拍照返回 Start-->
        <provider
            android:name="android.support.v4.content.FileProvider"
            android:authorities="${applicationId}.fileProvider"
            android:exported="false"
            android:grantUriPermissions="true">
            <meta-data
                android:name="android.support.FILE_PROVIDER_PATHS"
                android:resource="@xml/provider_path" />

shuanghua

println("HomeFragment.javaClass.simpleName = ${HomeFragment.javaClass.simpleName}2")// = Companion

println("HomeFragment::class.java.simpleName = ${HomeFragment::class.java.simpleName}1")// = 类名
println("homeFragment.javaClass.simpleName = ${homeFragment.javaClass.simpleName}3")// = 类名
println("homeFragment::javaClass.simpleName = ${homeFragment::javaClass.simpleName}5")// = 类名

println("homeFragment.javaClass.Name = ${homeFragment.javaClass.name}4")// = 包名.类名
println("homeFragment::class.java.Name = ${homeFragment::class.java.name}6")// = 包名.类名

shuanghua

public static int dpToPx(float dp, Context context) {
    return dpToPx(dp, context.getResources());
}

public static int dpToPx(float dp, Resources resources) {
    float px = TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, dp, resources.getDisplayMetrics());
    return (int) px;
}